Particularly when they are engaged in other activities, like copulation, which requires coming partway out of the shell.

尤其是当们忙于其他活动时，比如交，这需要们的部分身体从壳里出来。”

The rituals displayed can convey reproductive fitness or they can just trick reluctant mates into copulation.

所展示的仪式可以传达生殖能力，也可以只是情愿的偶进行交。

For males, it might just be a few moments of copulation and that's it.

对于雄性来说，这可能只是短暂的交，仅此而已。

(Laughter) Now, we define extra-pair copulation as the mating outside of a pair bond.

（笑）现在，我们将外对交定义为对关系之外的交。

It originates from the copulation of the dragon and the tiger.

源自龙虎交合。

For example, the fact that I am really outgoing and I'm not shy talking about sex and copulation and things like that.

例如，我真的很外向，而且我并害羞地谈论性和交之类的事情。

He proposed that the significant Rongorongo texts, including the Santiago Staff, documented, through a triad structure of images, the creation of the world and everything in it through a series of copulations.

他提出，重要的rongorongo文本，包括圣地亚哥手杖，通过图像的三联结构记录了世界及其一切通过一系列交而创造的过程。

This act of copulation, fertilization perhaps, which should have been no more to me than a bee is to a flower, had become for me indecorous, an embarrassing breach of propriety, which it hadn't been before.

这种交、受精的行为，也许对我而言，就像蜜蜂对一朵花一样，对我来说已经变得雅，一种令人尴尬的违反礼仪的行为，这在以前是没有的。

Basically, in the 80s, scientists discovered that songbirds were more polyamorous than expected, and it turned out that this phenomenon called extra pair copulation, or EPC, was behind the questionable parentage of many baby birds.

基本上，20世纪80年代， 科学家们发现鸣禽的“一夫多妻” 现象比预想的更为普遍，结果表明，这种被称为“额外对交”（简称EPC）的现象， 正是许多雏鸟身世存疑的幕后原因。