shrug

“Where's Dad?” “How should I know?” replied my brother, shrugging.

“爸爸在哪儿？”“我怎么知道？”哥哥耸了耸肩，答道。

He shrugged his shoulders as if to say that there was nothing he could do about it.

他耸了耸肩，好像在说他对此无能为力。

Thousands of people are starving to death while the world shrugs its shoulders (= shows no interest or care).

成千上万的人濒于饿死，世人却无动于衷。

“I'm afraid there's nothing I can do about your problem,” she said with a shrug.

“恐怕我对你的问题无能为力，”她耸了耸肩说道。

“Well, I guess we'll just have to do what he says,” said Kim with a shrug of resignation.

“哦，我想我们只能按他说的去做，”金说着，无可奈何地耸了耸肩。