without day
英 [wiˈðaut dei] 美 [wɪðˈaʊt de]

adv.

不定期，无限期；

双语例句

用作形容词(adj.)

1. They always report back on their work without day.
   他们总是不定期地汇报工作。
2. If you fail to oil the engine regularly,it could seize up without warning.
   如果你不定期给机器加油，它随时可能停止运转。

权威例句

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