That's why I left so early.

这就是我早早离去的原因。

《牛津词典》

Give me one good reason why I should help you.

我为什么要帮你？给我一个充分的理由。

《牛津词典》

That's why I must trust you to keep this secret.

这就是我一定相信你会保守此秘密的原因。

《柯林斯英汉双解大词典》

That's why I must decide on something at once while there is still time, before I am famous.

VOA: special.2009.09.20

One might win it in chemistry because the disciplines weren't as diverse as they are today. So, that's why I hesitate.

他之所以得到化学奖,是因为当时学科不像现在多样化,这就是我为什么会犹豫。

麻省理工公开课 - 固态化学导论课程节选

and he played on that team I told you about in Finland, Jokerit, so I think that's why I like him.

他在我跟你说的祖卡列特也打过球，我猜我因为这个喜欢他。

喜欢曲棍球 - SpeakingMax英语口语达人

The reason why I'm massively excited this morning is because it is transfer deadline day.

BBC: Transfer deadline day as it happened

Which is why I decided to learn more about their plight and our nation's legal and social response.

CNN: Don't turn your back on these children

At this point I think it is kind of obvious why I love the Sanctuary Lodge.

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