“轮换”的英语

“轮换”的拼音为：lún huàn...

他们轮换驮着对方。They give each other piggy-back rides.这个车间的工人上白班和上夜班每周轮换一次.The workers in this workshop do day and night shifts in weekly rotation.在交通信号轮换到绿灯以前不要穿过马路.Before the traffic signal turns to green light don't cro...