不定期的
adj. unscheduled ; nonsked ; nonscheduled ; aperiodic ; casual
双语例句原声例句
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各个政府部门的服务都是不定期的。
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我们可以不定期的随访但效果毕竟有限。
We could spring unscheduled visits but their effectiveness was limited.
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遗憾的是我们不能调整海湾上不定期的班船。
Regretfully, we can’t regulate the irregular liner on the gulf.
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It will include the syllabus which will occasionally be revised well and advance Also all of the class material will be on the site including copies of slides I'm presenting including this slides right now.
网站上资源里有教学大纲,我会不定期更新,会非常及时,所有的课程资料也会放在网上,包括我所展示的幻灯片,包括我现在放的这个课件
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