单词：lactones
n. One of a series of organic compounds, regarded as
anhydrides of certain hydroxy acids. In general, they are colorless
liquids, having a weak aromatic odor. They are so called because the
typical lactone is derived from lactic acid.
单词：lactones 相关文章
[00:01.87]Three Peach Stones [00:05.04]Observe a child; any one will do. You will see that not a day passes in which [00:11.93]he does not find something or other to make him happy, [00:14.89]though he may be in tears the next moment. Then look at a
英语专业晨读美文
很轻快很耐听，歌词很可爱：Donna Lewis- I could be the one 成长于英国卡地夫威尔士市的Donna，早在6岁时她就开始接触和弹奏钢琴。启蒙老师即Donna的父亲还引导小Lewis学着创作自己的歌曲，而这时
英文手机铃声歌曲
Chinese authorities, including Foreign Minister Wang Yi, have been promoting the Belt and Road Initative to Latin American and Caribbean countries as part of sessions now underway in Chile's capital, Santiago. Tie between China and Latin America and
2018CRI中国国际广播电台
Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到 听力原文收集区 ，您将会获得10到30积分的奖励! Thank you！
单词解析速记
SYDNEY: All molecules are not created equal. Some have saved billions of lives, wreaked environmental havoc or made the world a more colorful place. Here's our selection of those that have changed the course of human history。 发自悉尼：分子并
实用英语
有句话说的好：云中谁寄锦书来，相知何必曾相见。 《北京遇上西雅图2》其实它的副标题《不二情书》才是正片片名。这次女神不再是文青拜金女，摇身一变风情万种个性飒爽的赌场公关;吴
英美文化
英文歌词： Well I told you once and I told you twice But ya never listen to my advice You don't try very hard to please me With what you know it should be easy Well this could be the last time This could be the last time Maybe the last time I don't
英文摇滚歌曲
A billion people died on the news tonight But not so many cried at the terrible sight Well mama said It's just make believe You can't believe everything you see So baby close your eyes to the lullabies On the news tonight Who's the one to decide that
美国乡村音乐
Aishwarya Rai Bachchan is one of Indias best known and best loved actresses. She was born in 1973 and was a very bright pupil at school. She worked part-time as a model while studying architecture. She planned to be an architect. Things changed all o
世界名人简介
[00:00.00] MODULE 9 Mistakes Unit 1 What's the matter? [00:10.95]Activity 1.Listen and point.Sam:What's the matter? [00:26.72]Why are you laughing?Daming:We're going to have a baseball team. [00:31.06]Sam:So why is that funny?Why are you laughing? [0
北外版新标准小学英语第六册(三年级起点)
The Blue Box 蓝盒子 The ultimate combination of pranks and electronicsand the escapade that helped to create Applewas launched one Sunday afternoon when Wozniak read an article in Esquire that his mother had left for him on the kitchen table. 恶作
乔布斯传
A new survey shows you're not paying any more the gas pumped than you were three weeks ago. Good news since late May. Motorists aren't paying any more for gas, but not paying any less either, accordin
商业报道2006年
唐顿庄园第二季第二集_6 [INT. DINING ROOM - EVENING] VIOLET, DOWAGER COUNTESS OF GRANTHAM I gather your footman Thomas has returned to the village. No. [Violet refuses the sauce Lang offers.] ROBERT, EARL OF GRANTHAM Crikey. Where did you se
唐顿庄园第二季
EDUCATION REPORT - Schools Offer Help for Students Displaced by Hurricane Katrina By Nancy Steinbach Broadcast: Thursday, September 08, 2005 I'm Barbara Klein with the VOA Special English Education Re
教育与新闻
I Could Be The One （倾我所有） I could be your sea of sand （我愿成为你宁静的港湾） I could be your warmth of desire （我愿成为你温暖的庇护） I could be your prayer of hope （我愿成为你希望的祈祷） I could be your gift to everyday （我愿是你每一天
音乐咖啡厅
By Noel King Khartoum 06 June 2007 Officials of the United Nations and the International Organization for Migration, in coordination with the Sudanese government, say they have returned 100,000 former refugees and internally displaced persons to sout
2007年VOA标准英语（六月）
OK, I'm going to talk about my one wish. I think everybody has one or two things they wish they could change about themselves and for me I really wish I could sing. Unfortunately I have a terrible voice. I cannot sing at all, and in Japan, this is ve
实战口语情景对话
Todd: OK. Cat, we're back. We're gonna talk about things you can do. Cat: OK. Todd: Can you cook? Cat: Not really! Todd: No! Cat: Well, I can, but not very well. Todd: OK. What do you do for dinner? Cat: Buy take-away food. Todd: OK. When you buy tak
英语趣味课堂
OK, I'm going to talk about my one wish. I think everybody has one or two things they wish they could change about themselves and for me I really wish I could sing. Unfortunately I have a terrible voice. I cannot sing at all, and in Japan, this is ve
英语访谈对话