Fishes are caught when they are on the way upstream to lay eggs.
鱼群在前往上游产卵的途中被捕获。
To lay eggs, especially by means of an ovipositor.
产卵或产仔的个体。
In spring, it returns to the fresh water stream to lay eggs.
春天它回到淡水的小溪里产卵。
Each colony may have one or more queens whose job is to lay eggs.
每一个蚁群可能有一只以上的蚁后，这只蚁后的工作就是产卵。
It is very unusual for a mammal to lay eggs or to have poisonous spurs!
对哺乳动物来说，卵生和长有毒刺是很少见的。
This is the place where Malaysian Plover come to lay eggs, they stay in a couple.
这里是马来西亚鸻飞来产卵的地方。它们总是成双成对。
He collects butterflies and brings them into a lab to lay eggs. Then he puts new butterflies into the habitat.
他聚集了蝴蝶并且把它们带回实验室产卵，然后他就让这些新来的蝴蝶住进栖息地。
Scientists monitored the birds during the breeding season and noted when the female birds were preparing to lay eggs.
科学家在繁殖期观测这些鸭，并着重注意雌鸭何时准备生蛋。
The invention relates to a method for inducing verasper moseri to lay eggs naturally, which belongs to the aquaculture field.
本发明属水产养殖领域，具体地说是一种诱导条斑星鲽自然产卵的方法。
ADA FOAH, Ghana - you don't have to wait in line to watch sea turtles pull themselves onto shore to lay eggs, but you still need patience.
艾达·福阿，加纳——您再也不必排队观看海龟爬到岸上产卵，但你仍然需要耐心。
One reason for it is that around Easter time the rural household had plenty of eggs handy. The hens began to lay eggs again in the spring.
其中一个原因也许是，随着春天的来临，鸡开始下蛋的。在复活节前后，农户手里有许多鸡蛋。
Only nowadays all the cocks are cackling and pretending to lay eggs, and all the hens are crowing and pretending to call the sun out of bed.
只是如今所有的公鸡都咯咯叫，假装会下蛋，所有母鸡都喔喔啼，假装叫太阳起床。
"We believe flies might have gone inside his ears to lay eggs, which hatched into larvae and caused the itching," said Somsak Nonthasri, the doctor who treated him.
“我们相信可能是苍蝇跑进他的耳朵里产卵，卵孵化成为幼虫，导致耳朵痒，”治疗这名男子的医生桑姆沙克？诺萨斯瑞说。
Salmon manage to swim upstream to lay their eggs.
三文鱼设法游到上游产卵。
If insects paid attention to such advertisements, they might be prompted to lay their eggs on a duller, and presumably less resistant host.
如果昆虫注意到这样的广告，这可能会促使它们将卵产在一个更迟钝、据推测更不会抵抗的寄主上。
However, they are, in one respect, less fully given back to the water than whales or dugongs, for turtles still lay their eggs on beaches.
然而，从某种程度上讲，海龟并没有像鲸鱼或儒艮一样完全回到水中生活，因为它们依旧在海滩上产卵。
Where 50-kilogram king salmon once fought their way up waterfalls to lay their eggs in gravel beds, there now are only concrete walls holding back still water and deep beds of muddy deposits.
50公斤重的大马哈鱼王曾经奋力爬上瀑布，把卵产在砾石床上，现在只有混凝土墙挡住静止的水和深深的泥床。
Cuckoos would have good reason to do so, since the warblers and other small birds in whose nests they lay their eggs are understandably frightened of hawks, and give them a wide berth.
杜鹃有很好的理由去模仿鹰，由于莺和其它的小型鸟类在它们的巢中产卵，自然这些小型鸟类就很害怕鹰，并且对鹰敬而远之。
What a waste for a frog to lay so many thousands of eggs for just a couple of juvenile offspring!
青蛙一次产出成千上万只卵，只为了少数几个子代成蛙，这是多么大的浪费！
Spotted salamanders lay their eggs in pools in spring. And the egg capsules actually look green, thanks to the algae that surrounds the resident embryos.
斑点蝾螈于春天在池塘中产卵，并且胶囊状的卵呈绿色，这是因为藻类包围了这些胚胎。
Female crocs lay their eggs in clutches of 20 to 60. After the eggs have incubated for about three months, the mother opens the nest and helps her young out of their shells.
鳄鱼妈妈一次可以产卵20- 60个，经过3个月的孵化，鳄鱼妈妈就会打开巢穴的掩埋物帮助小鳄鱼顺利破壳。
After a few years building up strength, they swim back to the beaches were they were born to lay up to 150 eggs at a time in holes dug in the sand.
几年过去了，它们的力气增强了，他们便游回了他们的出生地，在那里繁衍下一代，他们一次可以产下150个蛋，然后挖个洞把这些蛋埋在沙子里。
Ichthyosaurs also resembled cetaceans in another way: unlike most living reptiles, which lay eggs, they gave birth to live young.
鱼龙和鲸类的另一点相似在于：不像其他目前存活的卵生爬行类，他们胎生生下后代。
He spent almost all his fortune on the hen which was said to be able to lay gold eggs, only to find it could not lay eggs at all.
为了买那只据说能下金蛋的母鸡，他几乎卖掉所有家当，没想到这只鸡连一般的蛋也不会下。
The yeast seemed to thrive and spontaneously ferment in the sugar-rich bulbous formations called galls which arise when insects lay eggs on the tree's leaves.
这种新酵母似乎在叫做虫瘿的富含糖份的球状形成物里生气勃勃并自然地发酵。虫瘿是昆虫把虫卵产在树叶上时形成的。
Humanely raised hens will be healthier as they will have room to move around in addition to being less susceptible to disease, and will therefore lay healthier eggs.
人道“饲养的鸡染病的几率会减小，而有活动空间的鸡会更健康，则会产下更健康的鸡蛋。”
Humanely raised hens will be healthier as they will have room to move around in addition to being less susceptible to disease, and will therefore lay healthier eggs.
人道“饲养的鸡染病的几率会减小，而有活动空间的鸡会更健康，则会产下更健康的鸡蛋。”
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