rapid river

例句：

1. 1. The car is traveling at a rapid speed.
   汽车以很快的速度行驶。
2. 2. The river flows rapidly through the valley.
   这条河在山谷中快速流动。
3. 3. The team worked quickly to finish the project on time.
   团队迅速工作，按时完成了项目。