卵子

The first involves choosing the type of sperm that is used to fertilise the woman's egg.

一种是选择特定的精子进入卵子。

Here's a close-up of a number of sperm trying to fertilise an egg.

这张图片上显示的是大量精子正在争先恐后地给卵子受精。

Here'sa close-up of a number of sperm trying to fertilise an egg.

这张图片近拍了大量精子尝试给一个卵子受精的场景。

Sometimes, two sperm can fertilise a single egg, but this is only thought to happen in about 1% of human conceptions.

有时，2个精子会与一个卵子结合，但是这种情况的发生被认为仅占人类的1%。

Only using sperm that carry an X chromosome to fertilise the egg means only unaffected girls are conceived.

只选择带有X染色体的基因的精子进入卵子。也就是说生一个没有缺陷的女儿。

They are not sure why smokers produce fewer boys, but they suspect that sperm carrying the Y chromosome for male children may be more susceptible to the effects of tobacco which could make it less likely to fertilise the woman's egg.

他们无法确定，为什么吸烟者生男孩的可能性较小。但是他们怀疑，决定生男孩的携带y 染色体的精子更容易受香烟的影响，使其与卵子结合的可能性降低。

The journey sperm undertake on their way to fertilise an egg has been likened to a human trying to swim a journey of several thousand kilometers.

我们可以把精子对于卵子受精的旅程形容为一个人试着游上千公里的的距离。

On the other hand, if you do get tomate, having bigsexual organs is likely to increase the chance that it will beyoursperm, rather than another male's, that fertilise the female'seggs.

从另一方面说，在交配时，如果一个雄性金龟拥有较大生殖器，那么就意味着这只金龟的精子使卵子受精的几率相对于其它雄性金龟较大。

Sperm cells swim through the uterus towards the fallopian tube, racing to fertilise an ovum.

精子细胞游过子宫游向输卵管，抢占卵子。

In addition, quantity and quality of eggs are just two factors affecting fertility.

卵子的数量与质量只是影响生育能力的两个因素。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。