园艺的最大乐趣是谁也不知道到底会长出什么。

Half the fun of gardening is never knowing exactly what's going to come up.

《牛津词典》

到底什么是色盲症，你又是怎么发现自己有色盲症的？

What exactly is colour-blindness and how do you find out if you have it?

《柯林斯英汉双解大词典》

请原谅我的无知，这家公司到底是干什么的？

Forgive my ignorance, but what exactly does the company do?

《牛津词典》

So what is this all about? What is an object in object-oriented programming?

所以它到底是什么呢？,面向对象编程中的对象到底是什么呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

You smell and you think, "Is that Japanese? Is that Indian? What type of food is that?"

你使劲闻了闻，你在想“这是日本料理，还是印度菜？这到底是什么菜呢？”

What kind of 课堂 - SpeakingMax英语口语达人

It's interesting to think about what's driving that and what it means for our health and for international politics.

到底是什么导致了这些变化以及,这对我们的健康和国际政治意味着什么,这些都值得我们思考

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选