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

尤其是当它们忙于其他活动时，比如配，这需要它们身体从壳里出来。”

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

所展示仪式可以传达生殖能力，也可以只是欺骗不情愿配偶进行配。

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

于雄性来说，这可能只是短暂配，仅此而已。

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

（笑）现在，我们将外配配定义为配关系之外配。

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

它源自龙。

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，我真很外向，而且我并不害羞地谈论性和配之类事情。

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.

这种配、受精行为，也许我而言，就像蜜蜂一朵花一样，我来说已经变得不雅，一种令人尴尬违反礼仪行为，这在以前是没有。

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“一夫多妻” 现象比预想更为普遍，结果表明，这种被称为“额外配配”（简称EPC）现象， 正是许多雏鸟身世存疑幕后原因。