Order a replacement in accordance with one cycle. Su Song, "like thieves of Hebei Jingdong": "Big business is neither Ji Zhi, then take turns selling, taxes will be more." "Water Margin" the second time: "Shonai Zhuangke, turns the light." Ba Jin "Autumn" 2: "He turns to a pair of little eyes looking at Zhong Ke-ming and two high."
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English Expression
n.: turn, alternation, rota, in turn, take turns, by turns, in rotation, trade off, do sth.in turn, regular organized sequence of things or events
v.: go, rotate, with sth, ~ between A and B occur in turn, consist of two different things in turn