袋鼠雌袋鼠在植物繁殖力充足的时候生育后代是有利的。
It is advantageous for a kangaroo female to produce young at a time when plant productivity is sufficient to support her offspring.
此外，大部分雌苏铁球果的结构似乎与风直接授粉不一致。
Furthermore, the structure of most female cycad cones seems inconsistent with direct pollination by wind.
这些有毒物质会限制毛毛虫的生长，减少雌蛾产卵的数量。
These noxious substances limit caterpillars' growth and reduce the number of eggs that female moths lay.
在滞育期间，小袋鼠呆在雌袋鼠的育儿袋里，因而推迟了子宫内第二个受精卵的发育。
During diapause, a young kangaroo stays in the female's pouch and growth of a second fertilized egg inside the uterus is delayed.
然而，到了第12天，当它们长到3厘米长时，就会有成百上千微小的卵在雌蛙的身体下部形成。
By the twelfth day, however, when they are about 3 centimetre long, hundreds of tiny eggs form on the underbodies of the females.
他们看到，如果雌鱼吃了对虾——即使是在这个陌生的实验室环境中——雄性裂唇鱼也会惩罚或驱赶雌鱼。
They saw that the male cleaner fish — even in this unfamiliar lab setting — would punish or chase away the female fish if the females ate a prawn.
雌章鱼会。
雌蝴蝶在植物的叶片上产卵。
像雌鸟一样，雌鸭嘴兽也下蛋。
小鸡与母鸡都是鸡，可是因其大小雄雌，在功能上还是有其差异的。
Both chick and hen are chooks, but their function is different due to size and gender.
用组织学方法初步研究了罗氏沼虾雌体腹肢外骨骼的结构。
The exoskeleton structure of female pleopod in Macrobrachium rosenbergii was primarily investigated by histological method.
在相同温度下，产卵雌虫的发育时间比非产卵雌虫的长。
The development time of ovigerous females was longer than that of non-ovigerous females at same temperature.
通过观察青蒿琥酯对曼氏血吸虫雌虫产卵的影响，分析药物的抗生殖作用。
Study the anti-fecundity effect of artesunate against the schistosoma mansoni by observation and analysis of the parasite egg laying.
也可以用加一个单词办法来表示雄性或雌性，如：母熊（she-bear），雌猎豹（guepardo-hembra）。
It may also add a word for maleness or femaleness: she-bear, guepardo-hembra.
删除单个基因使雌鼠像男鼠。
在经过的时候，雌猩猩和小猩猩盯着我。
雌鼠们表现出明显的偏好。
由马戏团饲养的雌象的状态又是怎样呢？
雄蚊和雌蚊都是以植物汁液和其他甜食为食。
Male and female mosquitoes alike get their nourishment from plant nectar and other sugar sources.
这种品种的雌蜘蛛有一个相当有趣的孵卵方法。
The female of this species has a rather interesting technique for incubating her eggs.
皮乔托说她的团队正在雌鼠上重复该实验。
Picciotto says her group is repeating the experiments on female mice.
这些雄鼠可以补偿这一事实：它们对雌鼠吸引力不够。
The males may be compensating for the fact that they're less attractive to females.
许多雌海豹为了寻找冰块而将生产时间推迟了长达两周。
Many female harp seals delayed giving birth for up to two weeks as they searched for ice.
如果雌蚊离你足够近，就会用它们的热感应器来寻找你。
If the female mosquitoes are close enough, they can also find you using their heat sensors.
一些尝试依靠求爱打败别的雄性来得到拥有雌鱼的机会。
雄体逮住一个小蝇在雌体面前晃动它，好像是在跳舞似的。
The males catch a smaller fly and kind of dangle it in front of the females as they dance.
雌蛙一般比雄蛙大，但雄蛙颜色更华丽，从深绿到灰土色都有。
Females are generally larger than males, but males are more ornately colored, ranging from dark green to lime-colored.
科学家们还试图利用雌蟒在繁殖期发出的气味引诱雄蟒掉入陷阱。
Scientists are also trying to lure male pythons into traps using the scent that females emit at breeding time.
但这个宝宝没能活下来，之后雌熊的体温就变得和其他的熊一样了。
The cub did not survive, and the female's temperature afterward behaved more like that of the other bears.
但这个宝宝没能活下来，之后雌熊的体温就变得和其他的熊一样了。
The cub did not survive, and the female's temperature afterward behaved more like that of the other bears.
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