受精

Fertilization is external, producing free-living planula larva.

体外精，能产生自由活动的浮浪幼虫。

In human reproduction,one female egg is usually fertilized by one sperm.

在人体生殖过程中,个精使个卵精。

Syngamy - The fusion of egg and sperm cells into a zygote.

Syngamy -融合卵和精细胞成精卵。

Only one sperm fertilises an egg.

只有个精使卵精。

Bees fertilize flowers.

蜜蜂使花精。

The male and female pronucleus fused finally.Most hybrids could develop normally.

成熟的雌雄原形成后完成融合过程，形成合，精过程结束。

Allogamy Cross-fertilization in plants.

植物中的异体精。

This oosperm is you.

这颗精卵就是你。

DIESTRUS in the unspayed female dog. The period of sexual inactivity after the female is receptive.

绝育雌狗的间情期.雌狗易精后的性不活跃期.

Homogamy occurs in the closed cleistogamous flowers that appear late in the season in certain plants.

该般出在具有闭花精花的些特定的植物中。

Sporopore The aerial spore-producing body of certain fungi, e.g. the mushroom of Agaricus.

为苔藓和地钱的孢体世代具有。由精卵发育而来，包括基足、柄和孢蒴。孢体是寄生在配体上的。

Autogamy:Self-fertilization in plants.

植物的自身精。

Identical twins are also called monozygote twins because they develop from the splitting of a single fertilized egg.

因为是从同个精卵分裂而来，同卵双胞胎也被称作单卵双胞胎。

A paraffin method and a whole ovary stain clearing techique were used to study pseudogamy in Kentucky Bluegrass (Poa pratenesis L.).

本文运用石蜡切片法、整体透明法研究了草地早熟禾的假精。

Abstract： Aim:To establish the methods of microfertilization and explore the fertilizing potential of mouse sperm obtained from caput epididymidis and cauda epididymidis.

摘 要： 目的:建立显微精的方法，并探讨小鼠附睾精在显微注射进入卵母细胞后的精能力。

Traditionally, doctors use gestational age, the number of weeks from fertilization to birth, to determine whether a preemie should receive invasive care.

传统上，医生们用孕龄，精到出生的周数来决定极早产儿是否接进步的关注。

Most seed orchard theory is based on the assumption that panmixis will occur and that selfing will not be a serious problem.

大多数关于种园理论，是以假定能发生随机交配和自花精而不会成为严重问题为依据的。

4 Turbellarians are monoecious with the reproductive systems adapted for internal fertilization. And the monogenetic flukes (class Monogenea) are mostly ectoparasites of fishes.

涡虫是雌雄同体的，生殖系统适于体内精。单起源的吸虫（单殖纲）大多是鱼的外寄生虫。

Objective To investigate the relationship between the first polar body morphology of oocyte and the zygote morphology in pronucleus stage, embryo quality in cleavage stage.

目的探讨卵细胞第极体形态与原期精卵形态、卵裂期胚胎质量的关系。