If people do not know how much they are eating, it can be really hard for them to stick to a diet.

如果人们不知道自己吃了多少，他们就很难坚持节食。

youdao

But many people do not know the true meaning of freedom.

但是许多人仍然不知道自由的真意为何。

youdao

People do not know what "Formal-External" means in reference to a review.

人们并不了解评审参数中 "正式-外部"的含义。

youdao

Carbon monoxide is called the silent killer because people do not know it is in the air.

VOA: special.2010.02.02

So, hedge funds do not advertise, that's why people don't know about them and they have a mysterious -they sound mysterious.

对冲基金公司做不了广告,那也是公众并不了解他们的原因,他们披着一层神秘的面纱...,他们听起来挺神秘的

耶鲁公开课 - 金融市场课程节选

when other people that might not have been involved with the sport wouldn't really know what to do.

而或许没参与过这项运动的人连做什么都不知道。

体育相片的魅力 - SpeakingMax英语口语达人

These people do not know where to invest their energy, talent, skills, character and creativity.

FORBES: (Almost) Everything We Think About Employee Engagement is Wrong

The biggest crisis right now is that people do not know what to believe when the government asserts anything.

FORBES: Corruption in Spotlight, Is India Safe?

But most people do not know where to start or how to proceed.

NEWYORKER: Personal Best