These books must be very old.

这些书一定年头很久了。

《柯林斯英汉双解大词典》

There must be some mistake.

一定是出了什么差错。

《牛津词典》

They must be stinking rich.

他们一定富得流油。

《牛津词典》

When he was sure she was dead, Murlock had sense enough to remember that the dead must be prepared for burial.

VOA: special.2009.10.31

He says, "Poetry in our own time-- -- such is the complexity of the world we live in-- must be difficult."

他写道，“我们这一时代的诗-,正如我们生活着的世界-,让人费解“

耶鲁公开课 - 文学理论导论课程节选

Oh really? I imagine that it must be very difficult to drive in a big city like New York.

是吗？在大城市开车肯定会比较困难，比如在纽约。

Do you ever实战 - SpeakingMax英语口语达人

No one has counted but so many tell stories that it must be thousands and thousands.

BBC: [an error occurred while processing this directive]

There can be no clearer example of where our common values must be rediscovered.

CNN: Story highlights

As any professional photographer must be these days, Muller is also something of an entrepreneur.

CNN: These photos put you face-to-face with sharks