We are a minority and must convince people of the justice of our cause.

我们是少数，必须让人们相信我们动机的正当性。

《柯林斯英汉双解大词典》

They are bad mice and must be captured and destroyed.

它们是坏老鼠，必须抓住它们消灭掉。

youdao

My doctor told me that I am overweight and must lose 10 pounds.

我的医生告诉我，我超重了，必须减肥10磅。

youdao

Those chosen must come from poor families and must also face at least one barrier to getting a job.

VOA: special.2009.08.20

But it's a good story, Joule decided that there must be a direct relationship between work and heat.

所以说，这只是一个不错的故事而已，焦耳认为功和热之间,一定具有某种直接的联系。

麻省理工公开课 - 热力学与动力学课程节选

For example, if you are running behind schedule and you really must be moving to your next appointment,

例如，如果你已经比计划的时间晚了，不得不马上赶赴下一场约会的时候，

have to 课堂 - SpeakingMax英语口语达人

With further mutations, they said MERS "might become increasingly transmissible" and must be continuously assessed.

NPR: To Stop MERS, Longer Quarantines May Be Necessary

Technology always evolves faster than the law and must patiently wait for it to catch up.

FORBES: The Impact Of The SEC's Social Media Pronouncement

In fact, the economy and the society are one and must be analyzed as such.

FORBES: America in Danger of Collapse?