In fact, subtle changes in program behaviour and timing can cause them to appear unexpectedly. Some examples are.

实际上，对程序行为和计时的细微更改可能导致这些异常的意外出现。

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Other "cells" appear to assist me, extra resources fall into my lap unexpectedly, or I enjoy unusually good luck.

其他的“细胞”显得也正在帮助我，有额外的资源意外地落进我的怀抱，或者我享受到了不常有的好运气。

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No one likes things to break. We don't like holes to appear in airplane cabins unexpectedly;

没人希望发生坏事.我们不会希望飞机的客舱内突然出现一个洞;

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Polunin, who at 19 became the Royal Ballet's youngest male principal, shocked the dance world in January 2012 by unexpectedly quitting a week before he was due to appear as the lead in a production of The Dream.

BBC: Ballet star Sergei Polunin exits Midnight Express

Ordinary people in Hong Kong appear increasingly to be saying that they want a bigger part in politics too, as shown by the unexpectedly high turnout in May's Legco elections.

ECONOMIST: Tung and the custard tarts | The