“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

我要是知道她的名字就好了。

If only I knew her name.

《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