2 sentences

1. 他最近感到四肢乏力，精神不振。

   tā zuì​jìn gǎn​dào sì​zhī fá​lì, jīng​shen bù​zhèn.

   Recently he has felt weak in his limbs and low in energy.

   Source: Dong Chinese Dictionary

2. 这项政策执行乏力，未能达到预期的效果。

   zhè xiàng zhèng​cè zhí​xíng fá​lì, wèi néng dá​dào yù​qī de xiào​guǒ.

   The implementation of this policy was weak and failed to achieve the desired results.

   Source: Dong Chinese Dictionary