无数

guǎng chǎng shang yǒu wú shù de rén

广场上有无数的人。

There are countless people in the square.

tā shì jīng lì guò wú shù cì zhèng zhì yùn dòng de lǎo jiàng

他是经历过无数次政治运动的老将。

He is a veteran of countless political campaigns.

yǐ jīng yǒu wú shù shū jí xiě guò zhè ge zhǔ tí

已经有无数书籍写过这个主题。

Innumerable books have been written on the subject.

zhè jì huà shì fǒu kě xíng wǒ xīn lǐ wú shù

这计划是否可行，我心里无数。

I'm not too sure whether the plan will work.

zài zhè ge wèn tí shàng tā xīn lǐ wú shù

在这个问题上他心里无数。

He is uncertain on this issue.

tā xīn lǐ wú shù bù zhī dào nà ge rén huì zuò shén me shì

他心里无数，不知道那个人会做什么事。

There are countless in his heart, and he doesn't know what that person will do.