他现在很生她的气，因为他不明白她为什么不能得到温迪。

He was angry with her now for not seeing why she could not have Wendy.

youdao

他忧心忡忡，因为他不明白正在发生的一切。

He was worried, because he could not understand what was happening.

youdao

不可能前提为真，结论为假，但是你们不明白，因为他循环，所以有效。

There's no possible situation where the premises are true and the conclusion false but what you don't see that it is only valid because it's circular.

youdao

She didn't know why but she listened to him after all-- he was Gandhi.

她不明白为什么但还是听了他的话-,因为他是甘地。

哈佛公开课 - 幸福课课程节选

But I don't really know 'cause he didn't have the Internet. See?

但我不知道具体的结果，因为他不能使用网络。明白了吗？

理想是当密码专家 - SpeakingMax英语口语达人