球确实顺着平滑弯曲的道路，那么为什么击球者有时会看起来如此愚蠢地去摆动它们？

The ball really follows a smooth curved path, so why do batters sometimes look so foolish swinging at them?

youdao

你每30年就得把所有东西提高30厘米左右，那么为什么不建造一座可以漂浮的房子来简化这项工作呢？

You would have to raise everything about 30 centimeters once every 30 years, so why not make the job easier by making houses that can float.

youdao

如果这是真的，那么为什么像蛇、蜥蜴、乌龟和鳄鱼这样的冷血动物能在寒冷的冬天和炎热的夏天存活下来呢？

If true, though, why did cold-blooded animals such as snakes, lizards, turtles, and crocodiles survive the freezing winters and torrid summers?

youdao

He's absorbed the touching authority of Phoebus Apollo, the god of the sun. Milton -- why is that important?

他已经吸收了阿波罗触动他人的权威，那么，弥尔顿，为什么那么重要呢？

耶鲁公开课 - 弥尔顿课程节选

So, can you tell us about famous attractions in New York City and why they are famous?

那么，你能跟我们讲讲纽约著名的景点以及它们为什么有名吗？

纽约的景点 - SpeakingMax英语口语达人

So, again, this is why I'm disclaiming that this isn't all that interesting yet, but what am I doing.

此外，这就是为什么我放弃那个，这个不是那么,有趣，不过我现在在做什么呢？

哈佛公开课 - 计算机科学课程节选