地牢里一定会有活板门之类的东西。

There must be something like a trapdoor in the dungeon.

youdao

想必，一定会有一些折衷之法，能够平衡动物园的动物待遇和教育潜力。

Surely there must be some middle ground that balances zoos' treatment of animals with their educational potential.

youdao

一定会有办法把我们繁忙的生活安排得既舒适又能找到内心平静。

Surely there is some way of ordering our busy lives so that we can live in comfort and find spiritual harmony too.

《柯林斯英汉双解大词典》

By the same token, if literature has effects, it must have effects on someone, and this gives rise to the equally interesting and vexing question, "What is a reader?"

同样，如果文学史有影响的，它一定会对某些人产生影响，它也会引出一个同样有趣,而恼人的问题，“读者是谁？“

耶鲁公开课 - 文学理论导论课程节选

Because we know as we go to infinity, even though the density gets smaller and smaller and smaller, we still have electron density very far away from the nucleus.

因为我们知道即使到了无穷远处，尽管电子密度会变得非常非常非常小，但我们仍然有一定的电子密度，无论离原子核多远。

麻省理工公开课 - 化学原理课程节选

We assume that unless we're dealing with Scheherazade, it has to have an end, but at the same time we might well ask ourselves, why does it have a middle? What is the function of the middle with respect to a beginning and an end?

而且我们认定一定会有结尾，除非讲故事的是那个，《天方夜谭》中的苏丹新娘，但是我们要问自己了，为什么故事一定要有经过呢？,故事的经过对于开头结尾来说起到什么作用呢？

耶鲁公开课 - 文学理论导论课程节选