Are you sure? The infant mother pair bond is the building block of primate psychology.

你确定吗 母婴配对关系是灵长类动物心理的基础。

To form a pair bond, one has to tolerate another individual for a long period of time.

“为了结合成一对，一方不得不长时间忍受另一方。”

In the spring, they start pairing up, and they vocalize with each other to sort of strengthen the pair bond.

在春天它们开始配对并互相发声以加强配对关系。

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

（笑声） 现在，我们将配对之外的交配定义为配对之外的交配。