This is a really interesting system because it also solves a problem for the cell.

这真的是一个有意思的系统,因为它也解决了细胞面对的难题

耶鲁公开课 - 生物医学工程探索课程节选

because this is the four years in our lives that we really do have this unique experience.

因为这是我们生命中的四年时光，而我们真的应该拥有这样的独特经历。

纽约大学 - SpeakingMax英语口语达人

And then other people are really excited because it's a once-in-a-lifetime opportunity

而另外一些人真的很兴奋，因为这是一个一生只有一次的机会，

正准备奥运会 - SpeakingMax英语口语达人

because it's a waste of money, really, in my opinion.

因为这是浪费钱，真的，这是我的观点。

奢华购物的天堂 - SpeakingMax英语口语达人