The males are often larger than the females.

雄动常比雌动大。

American widgeon the male of which has a white crown.

美洲野鸭雄的头冠为白色。

The males in the herd protect the females and the young.

兽中的雄动雌动和幼崽。

Antherozoid (spermatozoid) The male gamete of algae, some gymnosperms, and the non-seed-bearing plants.

藻类，某些裸子植和没有种子形成的植中的雄配子。

Male-sterility mainly results from the abnormality of mesospore,tapetum tissue and vascular bundle.

中层组织、绒毡层组织及药隔维管束异常均是雄败育的因素。

The fish, smallmouth and largemouth bass, were male but neertheless carried immature eggs.

这种小口黑鲈和黑鲈为雄，却带有未成熟的卵子。

And among garter snakes, male-on-male contact may allow some solitary males to thermoregulate and, therefore, survive.

在花斑蛇之间，同的亲昵可以让一些落单的雄获得体温，从而得以生存。

Like all Cestoid's each individual has male and female reproductive structures in its proglottid and can reproduce independently.

像所有的绦虫一样，每一条寄生虫的节片上都有雄和雌的生殖结构，能够独立生殖。

When the term peafowl is used, peacock then refers to the male of a species and peahen to the female.

当使用了孔雀这个语词，孔雀就代表雄的种类，而雌孔雀就另有一个名词。

MATERIALS AND METHODSMaterials: 12healthy, otomicroscopically normal guinea pigs weighing 250 - 300g and with a normal Preyer reflex were used.

耳廓反射灵敏的健康白色红目豚鼠12只，体重250～300克，雄。

Trochus pyramis Born is of gonophores.The male reproductive system is mainly composed of the spermaries and spermaductus, instead of mating and others glands.

形马蹄螺为雌雄异体，其雄生殖系统主由精巢和输精管组成，没有交接器，也没有其他的附属腺体。

Objective To study male insect s apical dilation of parameres and aedeagus of Leptoconops kerteszi complex and provide the scientific evidence for diagnosis among species.

目的研究古塞细蠓复合组雄成虫阳基侧突膨端体及阳茎中叶,为种间鉴别提供科学依据。

If the top male, Socko, had groomed May, for example, his chances of obtaining a few branches from her in the afternoon were much improved.

举例来说，是α雄萨可为梅伊理过毛，下午牠从梅伊手上拿到几根嫩枝的可能就会大增。

Based on the years experiences, the author summarized and provided the main criterion and technique measures for improved cytoplasmic male sterile monogerm hybrid sugarbeet of seed reproduction.

总结了多年雄不育甜菜单胚型杂交种的良种繁育实践经验，对该类品种的良种繁育主原则和技术措施进行探讨。

In the present paper, the results on induction of monohaploid plants from a pollen derived typical male sterile dihaploid strain of Solanum tuberosum L. were reported for the first time.

本文首次报道了用花药培养法由一个典型的雄不育的双单倍体品系诱导产生一单倍体的试验结果。

For relationship of projecting part of forehead to sex and age, most of male H. armiger(72%) has projecting p art of forehead, but some of female (21.1%) has it too .

从皮叶与别和年龄的关系可见，具皮叶者多数为雄(72%)，但雌亦有21.1%的个体有皮叶。