“要是我知道就好了，”苏晨说。

“If only I knew the answer, ” Suchen said.

youdao

你要是早点让我知道就好了。

If you could let me know about it early, that will be fine.

youdao

我要是知道他们的用意就好了。

I wish I knew what they were driving at.

《牛津词典》

And humankind receives its first set of explicit laws, no more implicit, "Murder is bad." "Oh I wish I had known!"

人类要接受明确的律法，而非隐晦的，谋杀是不好的，哦！我要是早知道就好了“

耶鲁公开课 - 旧约导论课程节选

I guess you just try. I don't know. Like at the start, I was like a bit judgmental about, like, the American culture

我觉得你只要尽力就好。我不知道。就像一开始，我也对美国文化有些品头论足的倾向，

有趣的留学生活 - SpeakingMax英语口语达人

I'm not going to be thinking I'm clever, and can pick winners and losers, I'm just betting on the market as a whole.

我觉得我不聪明不知道，那只股好哪只股差，我就看市场行情整体是好是坏。

麻省理工公开课 - 计算机科学及编程导论课程节选