[lái huí]
(往复一次) make a round trip; make a return journey; go to a place and come back
make a round trip
打来回儿
It takes half an hour to go on foot from my home to my school and back.
从我家到学校来回要走半小时。
(往复多次) back and forth; to and fro
oscillate; vacillate
来回摇摆
He swam back and forth five times up and down the swimming pool.
他在游泳池里游了5个来回。
(周期; 循环) cycle