“輪換”造句

他們輪換馱著對方。
They give each other piggy-back rides.

這個車間的工人上白班和上夜班每周輪換一次.
The workers in this workshop do day and night shifts in weekly rotation.

在交通信號輪換到綠燈以前不要穿過馬路.
Before the traffic signal turns to green light don't cross the street.

• #輪換