stagnation

例句：

1. 1. The traffic was at a standstill for hours.
   交通停滞了几个小时。
2. 2.The economy is in a state of stagnation due to the lack of investment.
   由于缺乏投资，经济处于停滞状态。
3. 3.The project has been stagnating since its initiation.
   自从项目启动以来，进展一直停滞不前。