无力

他太累了，无力再去工作。

tā tài lèi le, wúlì zài qù gōngzuò.

He was too tired to work any further.

面对这个问题，他感到无力。

miàn duì zhè ge wèntí, tā gǎndào wúlì.

Faced with this problem, he felt powerless.