There are many sources of volatility, and rapid change often comes in an unexpected form.

存在很多易变源，而且快速的变更经常以意料之外的形式出现。

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That however did not prevent an unexpected and rapid rise in his international career which has gone from youth level to under 21s and then on to the full German side in less than six months.

然而没有想到的是，他的迅速成长使他在21岁之前就进入了国家队，在那里他至少有六个月要打边后卫。

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In a world of more and more uncertainty and rapid change, it is those unexpected encounters that can make the difference between success and failure.

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The RFTG was created under the 2010 defence review and is a rapid reaction force which deals with unexpected world events that require military intervention.

BBC: HMS Illustrious