2 sentences

1. 风势逐渐减弱。

   fēng​shì zhú​jiàn jiǎn​ruò.

   The wind is gradually weakening.

   Source: Dong Chinese Dictionary

2. 这个篮球的弹力已经减弱了，需要充气。

   zhè​ge lán​qiú de tán​lì yǐ​jīng jiǎn​ruò le, xū​yào chōng​qì.

   The basketball has lost its bounce and needs more air.

   Source: Dong Chinese Dictionary