单词:poeciliid fish
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A 1) herring once decided to swim right around the world. “I’m tired of the North Sea,” he said. “I want to find out what else there is in the world.” So he swam off south into the deep Atla
OliverJeffers 生在澳大利亚西部,但成长于北爱尔兰的贝尔法斯特,现在纽约。是个插画师,也是个作家。从 2004 年至今,他在动画界获奖无数。他的画充满童真,有点淡淡的忧伤,但又有浓烈的
Climate change is one of the most worrying things for our planet. Many politicians and scientists say it is the biggest danger we face. I read almost every day that climate change is changing the Earth forever. Many species of animal, fish, insect, f
Fish ad 鱼的招亲广告 Today we're looking at fish single's ads, let's see--- single fish female seeks good father to help with eggs. Come on, don't be serious. Fish don't place ad in a paper, plus I thought a common assumption in biology is that
Fear Smells Like Sugar Scientists have suspected for many years that fish might give off a chemical signal to warn other fish about the presence of predators. When a fish in a school is injured, for example, the rest of the school will panic and swim
fish or cut bait cold fish 有些人在处理问题的时候很果断,但是也有不少人前怕狼后怕虎,在处理问题的时候左顾右盼,迟迟不能做出决策。比如说,几个朋友
a fish out of water to teach a fish how to swim 在今天的节目里,我们要给大家介绍几个和鱼有关的习惯用语。中国人常常用「如鱼得水」来形容一个一切都很顺当的
Fish Blind Dates There are plenty of examples in nature of females being attracted to the biggest males. This is especially true for a species of fish called the Atlantic Mollie. The Mollie wants to be as big a fish as possible, because the females s
One thing we're proud of here at A Moment of Science is that there isn't a lot of sex and violence on our program. Although, did you ever stop to wonder why sex and violence so often go hand in hand? How come nobody complains about violence and garde
Fish live in water, but do they drink it? The answer is yes, but how fish drink water depends on where they live. Water gets into a fish's body through osmosis, the process in which water diffuses from a higher to a lower concentration. For example,
A Boy, A Dog, A Frog and A Friend by Mercer and Marianna Mayer 1 One day a boy went fishing with his dog and his frog.He sat by the side of a pond and patiently waited for a fish to bite. 2 All of a sudden he felt a bite! 3 It had to be a big fish be
英文 Top100精选绘本(PDF文本下载) 更多儿童英语: 汪培珽儿童英文分级书单《神奇树屋》 唐顿庄园 爱探险的朵拉
提起fish,它给人们的第一印象便是指“鱼”,实际上它的用法并非如此简单。fish用作可数名词指“鱼的条数”时单数和复数形式相同(two fish两条鱼),
脑白金到底是什么? 褪黑素,又名黑素细胞凝集素,俗称为脑白金,是存在于从藻类到人类等众多生物中的一种荷尔蒙,它在生物中的含量水平随每天的时间变化而变化。 Melatonin, sometimes ca
Y: I noticed that fish have holes that look like nostrils, does that mean they can smell? D: Smell, or olfaction, as scientists call it, is an important sense for many fish. Those little holes that look like nostrils are called nares. Nares dont lead
D: OK, Yael, you want to build an aquatic robot,and you're trying to figure out the most efficient way to move it through water, what do you do? Y: I am guessing the answer isn't to build a robot using a lot of root-force to move forward? D: Anyone w
Acanthostega 这种生物已经演化出前后肢,但每肢都有8趾。这种生物是从鱼类进化到两栖类的过渡产物。而且,它具有更多的鱼类特征,如有鳃、鳍和只能在水中起作用的感官。伦敦自然历史博
For Minnows, A Suicidal Survival Strategy 北美多种小型鱼类,特别是鲤科(Cyprinidae)鱼类的总称。亦指荫鱼科(Umbridae)和鱂科(Cyprinodontidae)鱼类,minnow一词又泛指许多大型鱼类的幼鱼。北美的鲤科米诺鱼包
Smallest Fish 最小的鱼 澳洲科学家宣称,他们发现了世界上最小的鱼类,这种鱼的寿命只有两个月,也不会发育出鱼鳍,牙齿和鱼鳞等构造。 这种鱼名为大型婴儿鱼(Stout Infantfish),是澳洲博物馆