约翰霍普金斯大学的社会学家安德鲁·切尔林说，对于为什么不同国家的生育率不同，“没有人能给出一个好的答案”。

"No one has a good answer" as to why fertility varies among countries, says sociologist Andrew Cherlin of The Johns Hopkins University.

youdao

我认为对那些人来说，生活在没有人讲他们目标语言的国家，确实是一个挑战。

I think that's really the challenge for people who live in a country where their target language isn't spoken.

youdao

目前，没有人能说出新工作岗位来自哪里或何时出现，任何明智的公司或国家都应该为所有替代方案做好准备。

No one can currently say where the new jobs are coming from or when, and any sensible company or country should prepare for all alternatives.

youdao