在你开始工作之前，一定要阅读所有的须知。
zài nǐ kāishǐ gōngzuò zhīqián ， yīdìng yào yuèdú suǒyǒu de xūzhī 。
Before you start working, you must read all the prerequisites.
这份合同有一些须知，你需要仔细阅读。
zhè fèn hétóng yǒu yīxiē xūzhī ， nǐ xūyào zǐxì yuèdú 。
This contract has some rules that must be known, you need to read it carefully.
参加这次活动之前，请确认你已了解所有的须知。
cānjiā zhècì huódòng zhīqián ， qǐng quèrèn nǐ yǐ liǎojiě suǒyǒu de xūzhī 。
Before participating in this event, please confirm that you understand all the prerequisites.