cycle
- n. 循环；周期；自行车；整套；一段时间
- vt. 使循环；使轮转
- vi. 循环；骑自行车；轮转
英英释意
- 1. an interval during which a recurring sequence of events occurs;
- "the neverending cycle of the seasons"
- 2. a series of poems or songs on the same theme;
- "schubert's song cycles"
- 3. a periodically repeated sequence of events;
- "a cycle of reprisal and retaliation"
- 4. the unit of frequency; one Hertz has a periodic interval of one second
- 5. a single complete execution of a periodically repeated phenomenon;
- "a year constitutes a cycle of the seasons"
- 6. a wheeled vehicle that has two wheels and is moved by foot pedals