轮换: rotate; take turns; alternate 短语和例子定期轮换 take turns according to a fixed schedule; 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.; 轮换牧地 rotat
Shandong base lettuce is going on the market immediately . the estimate time is in the beginning of may attaching pictures of gaomi station 山东莱西基地进行了三年的生菜种植,今年轮换种植了西兰花,预计采收时间为5月中旬。