Second, because only male deer rub, the buck rub and its associated chemicals indicate the sex of the deer producing the rub.

第二，因为只有雄鹿会做出摩擦动作，摩擦动作和与之相关的化学物质表明了制造擦痕的鹿的性别。

youdao

But, and this is important, their clutch volumes matched those of birds that have only male parental care.

但是，这一点很重要，它们的繁殖量与那些只有父方抚养幼儿的鸟类的数量相当。

youdao

Only male chiefs could eat turtle meat.

只有男性首领才可以吃海龟肉。

youdao

Only three countries have stayed in the top ten for the lowest male death rates all that time.

VOA: special.2010.05.05

But it actually referred more politically to all of the male citizens, and in Greek cities, by tradition, only men were citizens of a city.

但是政治意义上特指全体男性公民，在希腊城市里，按传统，只有男子才算城市公民。

耶鲁公开课 - 新约课程节选

For some others it might mean being basically restricted to the home, if not all the time, then the only exception being in public, in the company of a close-male relative as chaperon.

在一些别的地方可能意味着,基本上深居简出，即使不是一天到晚，也只有外出是例外，而且必须有一个男性近亲作监护人陪同。

普林斯顿公开课 - 人性课程节选

Only male finches sing, and the song is an important reproductive signal to the females.

BBC: Lowly females pick mediocre mates

Next day, when we went over, I was the only male anywhere around.

FORBES: We Need A New Religion

Originally, both men and women acted in Kabuki plays, but eventually only male actors performed the plays: a tradition that has remained to the present day.

UNESCO: Intangible Cultural Heritage