1 sentence for 效力 (xiào​lì — effectiveness)

1. 然而，这些药物在某些病人中根本不起作用，它们在其他人中失去了效力。

   rán'ér, zhè​xiē yào​wù zài mǒu​xiē bìng​rén zhōng gēn​běn bù qǐ zuò​yòng, tā​men zài qí​tā rén zhōng shī​qù le xiào​lì.

   However, these drugs don’t work at all in some patients, and they lose their effectiveness in others.

   Source: CCMatrix