“无力的”的英语可以翻译为：faint，weak，[医] adynamic，anergic，incapable ...

我们将看到经济有所复苏，但这种复苏将是非常无力的。We will see some economic recovery, but it will be very anaemic.我好像无法摆脱这种无力的感觉。I can't seem to throw off this feeling of inertia.刀从她无力的手里落下。The knife fell from her nerveless fingers....