So they constructed an experiment to discover if birds allowed to pursue life with a chosen mate fared any better than those forced into an arranged union.

因此他们组织了一场试验，以观察被允许自由择偶的斑胸草雀是否会比配偶由人工搭配的斑胸草雀生活的好些。

youdao

So they constructed an experiment to discover if birds allowed to pursue life with a chosen mate fared any better than those forced into an arranged union.

因此他们组织了一场试验，以观察被允许自由择偶的斑胸草雀是否会比配偶由人工搭配的斑胸草雀生活的好些。

youdao