挪威森林北辰星
循环 circulate; circle; round; repeat; [例句]哈维发现了血液的循环。Harvey discovered the circulation of the blood.
reviveanna
cycle [ˈsaikl]n.循环, 周期自行车, 摩托车My cycle is broken, so I shall have to walk.我的自行车坏了, 因此我得步行。vi.骑自行[摩托]车He cycled to school.他骑车上学。cycle 来自希腊语 kyklos 圆
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