说不定你就能避免或推迟手术。
美国的煤电厂平均一年有12.5%的时间用来做定期或不定期的维护。
The average U.S. coal plant is offline 12.5 percent of the year for scheduled and unscheduled maintenance.
童子曰："归期亦不定，或三五日，或十数日。"
促使，引起通过劝说或行为来带领或指引。用于不定式词组中。
To guide or direct, as by persuasion or behavior. Used with an infinitive phrase.
姓名前不能用不定冠词或定冠词。
闲适地或不定期地从一个地方到另一个地方，尤指无目的或无固定职业地。
To move leisurely or sporadically from place to place, especially without purpose or regular employment.
男人可以在他已和一个喜欢的人在一起的时候，在他心里说不定还有一个或更多的“她”存在。
Men can have and one of his favorite people together, perhaps in his heart there are one or more "she" there.
节假日或特殊情况不定时开航。
The liners, out of schedule will serve on the holidays and special time.
前后摇晃摇摆不定的动作或实例；
可以定期或不定期。
节假日或特殊情况不定时开航。
Thee liners, out of schedule will serve on the holidays and special time.
节假日或特殊情况不定时开航。
Thee liners, out of schedule will serve on the holidays and special time.
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