And this must be it.

而且是必须的。

youdao

If my mommy or daddy treats me this way, it must be my fault.

如果爸爸、妈妈这样子对待我，那一定是我的过错。

youdao

This will cost money, but if social inclusion is to succeed, it must be spent.

这将花费金钱，但是要想社会包容取得成功，这笔钱就必须得花。

《柯林斯英汉双解大词典》

"As soon as I saw this letter, I decided it must be the one I was looking for.It must be, even though it was completely different from the one Germont had described.

VOA: special.2009.12.26

And if it is going to be a standing wave then this must be an integral number of wavelengths.

如果这有个驻波的话,那么周长就是个整数。

麻省理工公开课 - 固态化学导论课程节选

Well it happened because we clearly must have a faulty assumption This can't possibly be true.

是因为做了,一个错误的,这不可能是真的。

麻省理工公开课 - 热力学与动力学课程节选

This must be what it's like to be part of a royal tour oneself.

BBC: Jubilee tour diary: Western Isles

This must be true for it is the number that government has calculated.

FORBES: How Technology Allows us to Lower Taxes and Shrink Government: Abolish the NEA

To further complicate this matter it must be noted that a company cannot unilaterally delineate its responsibility.

FORBES: Clarifying Corporate Responsibility: Part II