[医] 原线, 原条

primitive line的用法和样例：

例句

It is equired for the formation of the primitive streak during mouse gastrulation.它在小鼠原肠期的原条形成过程中起重要作用。

WHISPERS FROM ABOVE

The story of how we have systematically observed the heavens begins in the days before recorded time. For primitive man, the sun reigned supreme. Its recurring cycles of light and darkness formed the

发表于:2018-11-28 / 阅读(224) / 评论(0)

疯狂英语2001年

决胜六级听力必备 mode16

Section A [00:02.90]1. M: We've got 34 on the list so far [00:08.75]but I'm sure it'll be up in the forties before we finish. [00:13.90]W: Well,in that case a sit-down dinner is out of the question. [00:19.15]It'll have to be a buffet. [00:22.80]Q: W

发表于:2018-12-01 / 阅读(235) / 评论(0)

决胜六级英语听力

神秘的月球第3期

The full moon triggers a frenzy of activity. 满月会引发一连串狂乱的事件 It is the time of the highest tides. 海水在此时达到满潮 And in the oceans the full moon's bright light 在海中，满月明亮的胧光 is a mating call fo

发表于:2018-12-07 / 阅读(142) / 评论(0)

2013年VOA慢速英语(三)月

北师大版高中英语模块11--Unit33(3)-4

[00:01.48]This is because the subiect [00:03.53]is mentally condidering whether [00:05.29]to tell the truth,part of the truth, [00:07.47]or a complete lie. [00:09.56]Latencies of two or three seconds [00:11.84]should be regarded as highly suspicious.

发表于:2018-12-17 / 阅读(252) / 评论(0)

北师大版高中英语模块11(选修)

英语四级听力考试练习题Model Test Nine

[00:00.00]1.W:Do you have a calculator that you could lend me for a few days? [00:06.11]I just have no idea where mine is. [00:10.27]M:Well,yes,I have one.But actually my sister is using it now. [00:16.33]Q:What do we learn from this conversation? [0

发表于:2018-12-30 / 阅读(141) / 评论(0)

英语四级听力练习集锦

神秘的月球第18期

The moon mission is open to the public, 月球任务是对大众开放的 meaning anyone who has the financial capability 任何人只要能负担一亿元的机位费用 to afford the price of the seat, 就可以参加 they're each priced at a hundr

发表于:2019-01-02 / 阅读(211) / 评论(0)

神秘的月球

讨论猴子

Finn: Hello, Im Finn. This is 6 Minute English and Im joined this week by Neil. Hello Neil. (Monkey sounds) Finn: Err, Neil? (Monkey sounds) Finn: Neil, are you OK? (Monkey sounds) Finn: Actually that wasn't Neil, you'll be glad to know, he is safe a

发表于:2019-01-07 / 阅读(157) / 评论(0)

六分钟英语

CNN 2010-01-13

SAVIDGE (voice-over): Darkness falls in St. Louis and with it, the temperature. UNIDENTIFIED FEMALE: Blowing snow as well, the wind chill index five below downtown at the arch. SAVIDGE: And at the New Life Evangelistic Shelter the homeless have begun

发表于:2019-01-08 / 阅读(392) / 评论(0)

CNN2010年(一)月

西双版纳的英文介绍

Xishuangbanna is the southernmost prefecture of Yunnan Province. The prefecture is nicknamed Aerial Garden for its luxuriant and multi-layered primitive woods and tropical rain forests, which are teeming with animals and plants. Renowned as a huge na

发表于:2019-01-08 / 阅读(135) / 评论(0)

旅游英语

英语四级考试语法复习精选专项习题(1)

1.The Bushmen are _______ hunters even though their weapons are primitive. A.favourite B.original C.sufficient D.expert 2.Before he left the White House, the president made a _______ speech. A. quarrel B.symbol C.automobile D.farewell 3.The local gov

发表于:2019-01-08 / 阅读(136) / 评论(0)

大学四六级阅读

北师大版高中英语模块10--Unit30(4)-1

[00:00.00]Unit 30 [00:06.27]Task:who will go on Shipwrecked? [00:10.50]1 Read about a new TV programme [00:14.45]called Shipwrecked! [00:16.90]Shipwrecked!will be a major new TV series [00:19.77]featuring six volinteers(plus any children they [00:23.

发表于:2019-01-10 / 阅读(177) / 评论(0)

北师大版高中英语模块10(选修)

英语关键句型72种-5

41．

发表于:2019-01-30 / 阅读(113) / 评论(0)

英文语法词汇

You’ll Never Regret it

Time is running out for my friend. While we are sitting at lunch she casually mentions she and her husband are thinking of starting a family. We're taking a survey,she says, half-joking. Do you think I should have a baby? It will change your life, I

发表于:2019-02-04 / 阅读(182) / 评论(0)

阅读空间

英语歌曲:I walk the line

听多了流行的歌曲，今天给大家来一首老歌经典，希望大家会喜欢。如果大家有什么好歌，也可以给我留言或是在评论栏里给大家推荐。 I walk the line By Johnny Cash I keep a close watch on this heart of

发表于:2019-02-06 / 阅读(185) / 评论(0)

好听的英文歌曲

美国俚语:go primitive 打电话而不愿发短信

如果嫌要发短信的内容长，不方便交流，费时费力，你建议对方打电话，可以说Let's go primitive。primitive的意思是原始的，go primitive就是采用原始的方式，显然电话比短信出现的早，相比之下就

发表于:2019-02-09 / 阅读(140) / 评论(0)

美国俚语

PBS高端访谈:关于ISIS视频中人质的命运

HARI SREENIVASAN, PBS NEWSHOUR WEEKEND ANCHOR: After days of negotiations for a prisoner exchange apparently broke down, ISIS today reportedly executed a Japanese journalist it had been holding hostage in Syria. Just last weekend, ISIS also beheaded

发表于:2019-02-17 / 阅读(143) / 评论(0)

PBS访谈社会系列

No Gym. No Problem

No Gym. No Problem Maybe its too expensive. Maybe youre too shy. Some people just plain do not like the gym. It can be boring, intimidating, and it can seem somewhat redundant. The good news is theres another way. Sports! Here well take a look at wha

发表于:2019-02-18 / 阅读(135) / 评论(0)

阅读空间

雅思写作常见句型（二）

雅思写作常见句型（二） 26． if any结构，if any和if ever，意思是果真有，即使有，表示加强语气。与此类似的还有：if anything（如有不同的话，如果稍有区别），if a day（=at least，至少）。 The

发表于:2019-02-26 / 阅读(203) / 评论(0)

实用英语

英文摇滚歌曲：Siva Six - Line in Line Down

Line In.... Line Down Line in... line down... line in* Line in... line down... line in... line down Line in... line down... line in... line down Line in and save me Myself can drug me down Line in, forever blissful Continue to line down Line in... li

发表于:2019-02-26 / 阅读(183) / 评论(0)

英文摇滚歌曲

地道英语在线听-Bottom line 最低价格

Helen: This is Real English from BBC Learning English. Im Helen. Zoe: 大家好，我是刘佳。Helen, 今天咱们要学的是什么最新表达呢？ Helen: Todays new expression is bottom line. Zoe: Bottom line. Helen, 这个短语说的是什么啊？ Helen: Well, bottom line is

发表于:2019-02-26 / 阅读(250) / 评论(0)

地道英语在线听

最新学习文章

热门学习文章

热门标签

英语听力 VOA标准英语 VOA 英语歌曲口语听力提高听力材料听力教程英语学习 NPR 英语口语 VOA慢速英语美国国家电台儿童英语 VOA英语小学英语 cnn VOA常速英语标准英语英文歌曲听电影学英语英语单词英文电影慢速英语 CRI 美联社新闻美国有线新闻加州分级澳洲新闻流行歌曲常速英语 ABC新闻快递疯狂英语英语读物听力棚车少年经济学人英语词汇商务英语 VOA双语新闻 BBC 中国电台大学英语 Treasures 加州语文 BBC英语英语听力网站 VOA英语教学词汇万花筒 SSS VOA英语听力 AP 新概念分级英语英语广播听力精选英语播客英文绘本 TED演讲赖世雄英语MP3 CCTV9英语新闻 lesson 英语新闻初中英语学英语英语语法历史上的今天英文广播剧英语游戏原版英语小说英语有声读物书虫英语牛津英语读物访谈录新闻一分钟考研英语英语每日在线听新闻 Us 新概念英语地道英语单词第二册自然百科高中英语 sports 实用英语 MP3听力辛沛沛 ESL英语第一册英语每日一句 unit 新东方 GRE 每日一词 BBC听力

学英语单词

barium fluoride laser