查询词典 sperm whales

The nature of healthy birth is to seek good-quality sperm and ovum.

优生的本质就是寻求优质的精子和优质的卵子。

To solve this problem, we carry out full-dimensional researches on factors related with the combination of good-quality sperm and ovum.

为了解决这个问题，我们对优质精子和卵子结合相关的要素，进行了全面的研究。

The male's sperm determines the ovum to develope to be boy or girl.

正是男性的精子决定受精卵发育成男孩或女孩。

5The ovum develops only in the female, and the sperm cell develops only in the male.

卵细胞仅在女性体内产生，而精子细胞则仅在男性体内制造。

Objective To explore the effects of cryopreservation on morphology, oxidative stress and DNA integrity of human sperm.

目的 研究冷冻储存对精子形态、氧化应激水平和核DNA损伤的影响。

That's the male, inserting sperm into the female, using its feeler called a palp.

那就是雄性用他叫做触须的触角把精子射入到雌性体内。

Female parthenogenesis in which the embryo contains only maternal chromosomes due to the failure of the sperm to fuse with the egg nucleus.

由于在精子与卵子融合过程中发生失败而使胚胎只包含母染色体的一种单性生殖。

So the researchers used methods similar to those used for cloning to create a group of "bi-maternal" female mice from two eggs – eliminating the need for sperm and its cargo of paternally imprinted genes.

因此研究员们使用类似克隆的技术，用两个卵子制造了一批"两个母亲"的雌性小鼠——完全不需精子及其所携带的父方基因。

When he judges it is safe to do so, he inserts the end of a pedipalp into the females reproductive opening and discharges the sperm it carries.

当它确定安全时，便将须肢末端插进母蜘蛛的生殖孔中并放出它所携带的精液。

When he judges it is safe to do so, he inserts the end of a pedipalp into the female's reproductive opening and discharges the sperm it carries.

当它确定安全时，便将须肢末端插进母蜘蛛的生殖孔中并放出它所携带的精液。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？