lessened

例句：

1. 1. The temperature has lessened significantly since the rain.
   自下雨以来，温度已经显著降低。
2. 2. The amount of workload has been lessened by the new system.
   由于新系统，工作量已经减少。
3. 3. The stress level has been lessened after the successful surgery.
   手术成功后，压力水平已经减少。