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Then, for no apparent reason , the train suddenly stopped.

接着，不知什么原因，火车突然停了下来。

《牛津词典》

The person may become dizzy for no apparent reason.

此人可能会莫名其妙地变得头晕目眩。

《柯林斯英汉双解大词典》

The film is about all the bad things that happen to a common man for no apparent reason.

VOA: special.2010.03.01

That's why your operating systems and your personal computers often crash for no apparent reason. Just because two things happen to, once in a while, occur at the same time.

这就是为什么你的电脑或者操作系统,经常会毫无预兆的崩溃了,这是因为两件事情正好同时发生了，通常还有人工输入。

麻省理工公开课 - 计算机科学及编程导论课程节选

It's here that Milton for no explicit, or no apparent, reason at all - it's here that he provides a little theoretical digression on the stunning flexibility of angelic bodies.

但在这他无缘无故的，没有任何明显原因的,-在这儿他脱离了诗歌主线,转而去描写天使身体惊人的灵活性。

耶鲁公开课 - 弥尔顿课程节选

These cars' curtain side airbags may inflate for no apparent reason because of a manufacturing error.

CNN: SHARE THIS

But attempting to play football in this weather is suicide for no apparent reason.

BBC: Chick Young's view

To the person suffering, both events are transformative and happen for no apparent reason.

ECONOMIST: Philip Roth's new novel