sperm

1. The male sperm fertilizes the female egg.: 雄性的精子使雌性的卵子受精。

2. It only takes one sperm to fertilize an egg.: 只需一个精子就可以使卵受精。

3. Conception occurs when a single sperm fuses with an egg.: 当一个精子和一个卵子结合时受孕就发生了。

4. The sperm sample is checked under the microscope before insemination is carried out.: 进行受精前用显微镜检查精子样本。

5. On this butterfly egg, the lacy pattern marks the micropyle, where sperm enters.: 在这种蝴蝶卵上，花边图案标记精子进入的卵孔。

6. A female stores sperm and can determine the sex of each egg she lays by fertilizing it or leaving it unfertilized.: 雌性储存精子，可以通过受精或不受精来决定每一个卵细胞的性别。

7. The sperm fuses with the egg to begin the process of fertilization.: 精子与卵子结合开始受精过程。

8. Its close relative, the Colossal Squid, may grow too much greater sizes, as evidenced by the size of sucker marks on sperm whales.: 它的近亲，大王乌贼可能长得更大，抹香鲸身上的吮吸痕迹就是证据。

9. For a long time, we assumed that all whales that had teeth including sperm whales and killer whales were closely related to one another.: 在很长一段时间里，我们认为所有有牙齿的鲸鱼，包括抹香鲸和虎鲸，彼此都是密切相关的。

10. Production of testicular output sperm and spermatic fluid is also larger in polygamous animals.: 在一夫多妻的动物中，睾丸输出的精子和精浆的量也较大。

11. The objective is to evaluate the role of sperm kinematic parameters in the hyperactivation of Guinea pig spermatozoa.: 目的是评估精子运动学参数在豚鼠精子过度激活中的作用。

12. Do you know how the sperm whale manages to do this?: 你知道抹香鲸怎样设法做到这个的吗？

13. Sperm whales and giant squid may be mortal enemies.: 抹香鲸和巨型章鱼可能是死敌。

14. Ambergris is the concretion in the intestine of the sperm - whale.: 龙涎香是抹香鲸肠内的结石。

15. It takes about 175, 000 sperm cells to weigh as much as a single egg cell.: 一个卵细胞的重量相当于约175 000个精细胞的重量。

16. They compared sperm from a fruit fly, sea urchin, rooster, fish and human.: 他们比较了果蝇、海胆、公鸡、鱼类和人类的基因。

17. You generally have to be white, as most sperm recipients are white couples.: 通常你得是白人，因为大多数接受人都是白人。

18. When a sperm whale is sick, it many produce a fatty substance called ambergris.: 当抹香鲸生病时，它会产生出一种脂肪物质，被称为龙涎香。

19. Sperm whales are often spotted in groups (called pods) of some 15 to 20 animals.: 抹香鲸通常被发现成群出现，每群大约有15至20条。

20. Britain also faces a shortage of sperm donors, but the issue there is not compensation.: 英国也面临着捐精荒，但那儿的问题不是补偿的事。

21. Sperm whales, which spend more time than other species at the surface, were also vulnerable.: 抹香鲸待在水面上的时间比其他种类的鲸鱼都要长，所以也很容易被晒伤。

22. To snack on octopus and giant squid, sperm whales sometimes pe over 2,000 meters in the sea.: 为了猎食章鱼及大型乌贼，抹香鲸有时会潜到2,000多公尺深的海中。

23. Sperm whale poop helps fertilize algae, which in turn suck up carbon dioxide via photosynthesis.: 抹香鲸向藻类施肥，反过来，又通过光合作用吸收二氧化碳。

24. Just to make sure you follow through, your paychecks arekept in escrowby the sperm bank until the end of the contract.: 为了让你遵守契约，直到合同结束，你才能拿到钱。

25. A study in 2006 found older men are more likely to father dwarves, due to an age-related genetic mutation in their sperm.: 2006年的一项研究发现大龄男士生养侏儒子女的机率更大，这是由他们与年龄相关的基因突变造成的。

26. That in turn stands to have an effect on the food chain, since giant squid provide the meal of choice for endangered sperm whales.: 其后果又对食物链产生影响，因为巨型鱿鱼是濒危抹香鲸的首选食物。

27. But previous sightings and sound recordings closer to the surface suggested that the sperm whales are relatively few and far between.: 但是之前位于水面附近的目击和录音都说明抹香鲸在那儿相对稀少。

28. The scientists also found that darker whales, in this case sperm and fin whales, tended to not get sunburned as much as lighter blue whales.: 科学家还发现深颜色的鲸鱼，比如长须鲸和抹香鲸，不会像浅蓝色的鲸鱼那样遭受同等程度的灼伤。

29. The scientists also found that darker whales, in this case sperm and fin whales, tended to not get sunburned as much as lighter blue whales.: 科学家还发现深颜色的鲸鱼，比如长须鲸和抹香鲸，不会像浅蓝色的鲸鱼那样遭受同等程度的灼伤。

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