教授：你知道这不管用，你结婚太长时间了。

Prof: It won't work you know. You've been married too long.

youdao

汤姆的妈妈一直告诉他应当努力学习，但这不管用。

Tom's mother kept telling him that he should work hard, but it didn't help.

youdao

谢天谢地孩子们还吃这一套，我不知道哪天如果这不管用了该怎么办？蒙混过关，我想。

Thankfully the children haven't clocked onto that yet, but the day is fast-approaching when they will and I've no idea what I'll do then, just muddle through, I suppose.

youdao