theirs的词性为代词
theirs
pron. 他们的,她们的,它们的他的,她的
It's a favourite game of theirs.
这是他们最喜爱的游戏。
The algorithms find the people out there whose answers best correspond to yours—how yours fit their desires and how theirs meet yours, and according to what degree of importance.
运算规则搜寻出答案与你的答案最相符的人——根据她们对你和你对她们期望的符合程度,以及符合项的重要性。