- 释义:
- adj. 周期的;定期的
- 例句:
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Long long ago, we knew the periodic motion of a planet.
很久以前, 我们就知道行星的周期运动.
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These arrangements are subject to periodic reviews.
这几项安排每隔一定时间须予复查.
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Periodic checks are taken to ensure that high standards are maintained.
定期检查以确保维持高水准。
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