你可能会以为它不起作用了或者什么地方做错了。

You might feel that it's not working, or that you're doing it wrong.

youdao

哈利揪住斗篷，但它并没有溜走的意思，飞来咒对它不起作用。

Harry seized its folds, but it made no attempt to escape: The Summoning Charm had not worked on it.

youdao

“虽然我们起初接受有关灭顶法的乐观报告，但是很明显，它不起作用，”奥巴马在声明中表示。

'While we initially received optimistic reports about the (top kill) procedure, it is now clear that it has not worked,' Obama said in a statement.

youdao