OK, so now the question is, how do we know the first place that this is a suitable reductant?

好的，现在的问题是，我们如何能知道第一步中,镁是一个合适的还原剂？

麻省理工公开课 - 固态化学导论课程节选

What would you say is the most suitable personality for being a doctor?

你觉得什么性格最适合做医生呢？

挽救生命的工作 - SpeakingMax英语口语达人