circular passage

例句：

1. 1. The engineer designed a circular passage for the new building.
   工程师为新建筑设计了一个环形通道。
2. 2.The car was stuck in a circular passage when it broke down.
   汽车在出故障时被困在一个环形通道里。
3. 3. The scientists used a computer model to simulate the circular passage of the river.
   科学家们使用计算机模型模拟了河流的环形通道。