Where the penalties are not a must, they should be imposed only if the facts of a case support it.

如果惩罚不是必须的，那么只有在该案件有事实支持的情况下才应该施加惩罚。

youdao

Where the penalties are not a must, they should be imposed only if the facts of a cast support it.

如果处罚不是必须的，则只有在有事实支持的情况下才应施加处罚。

youdao

Beauty is not a must, but looks are important.

美丽是不是必须的，但也是非常重要的。

youdao

At sixty degrees below zero, a man with wet feet must not fail in his first attempt to build a fire.

VOA: special.2010.05.01

You can also use a "must" pattern when you're not talking about a person but you're talking about a situation.

当你不在谈论人物，而是在谈论情况的时候，你也可以用“must”句型。

Must 课堂 - SpeakingMax英语口语达人

This is why he tells us parenthetically that marriage must not be called a defilement.

这就是为什么他顺便地告诉我们,婚姻不能被称为肮脏。

耶鲁公开课 - 弥尔顿课程节选

Without a truly compelling software idea, the iWatch is not a must-have product.

FORBES: iWatch Chicken And Egg: Who Will Make The Compelling Software For Our Wrists?

"I would say it's definitely not a must-get upgrade, and I think it has been relatively low-profile launch for a reason, " Arar said.

CNN: Microsoft launches new consumer Windows program

Critics from both the right and the left have long argued that putting business at the heart of the health-care system is not a must but a bug.

ECONOMIST: Business is right to be scared by the costs of Obamacare