I don "t know what to say."

我不知道说什么才好。

youdao

I don "t know what to say".

我不知道怎么说。

youdao

The girl staring at him, he didn"t know what to say."

姑娘两眼望着他，他不知道说什么好。

youdao

because there's, I don't know what to say, over 50, 60 colleges, you know, that are recognizable in California

因为在加州有，我不知道怎么说，有五六十多所众所周知的大学，

加州的大学 - SpeakingMax英语口语达人

V2 And there's going to be some volume V2 and some volume V1, but are not necessarily the same. Especially since the pressures are different. we don't know yet about temperature so I don't know what to say about these volumes because I don't know what the temperatures' are going to do.

这里的体积会变成2,这里的容积是V1，它们不必相等,尤其是当压力不相等的时候,我们还不知道温度,所以我不能说这里的容积,是多少因为我不知道,温度会怎样变化。

麻省理工公开课 - 热力学与动力学课程节选

So I don't know if it Does it matter what you say to babies as long as you say something.

所以我想知道,是不是只要你对婴儿说话就行,说话的内容并不重要

耶鲁公开课 - 心理学导论课程节选

"I don't know what to say, I didn't feel all that bad tonight, " Gee said.

WSJ: Mets end scoring slump but still lose to Cardinals

"I'm just so tired, I don't know what to say right now, " Lundqvist said with a smile.

WSJ: Lundqvist leads Rangers past Hurricanes, 4-1

"It's something to say when you don't know what to say, " says one of the two children, Jane.

BBC: Supercalifragilisticexpialidocious: What does it mean?