Aircraft were so precious that the incident brought on a confrontation between General George Kenny, commanding officer of the Fifth Air Force, and the volatile Whitehead.

飞机如此宝贵，第五航空队司令乔治·肯尼为此和暴躁的怀特黑德发生了激烈的争执。

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Despite the original misgivings of some of the Fifth Air Force crews, they began to understand that they had been given a new potent weapon.

尽管第五航空队的头头们还有些担忧，但他们确信已找到了一种新的厉害武器——改装后的B - 25。

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The interior has demographic depth: Anhui alone has a population of 62m, about three-quarters of Vietnam's (although about a fifth of its Labour force already works outside its borders).

内地有更加丰富的人力资源可资利用：仅安徽一省就有人口6千2百万，大约越南人口的四分之三(尽管该省越五分之一的人口已经在外地打工)。

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Northwest Airlines announced Friday it would cut 10, 000 jobs, nearly a fifth of its work force.

CNN: Airlines reeling, laying off thousands

Immigrants make up nearly one-fifth of the work force, mainly in agricultural and unskilled jobs.

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Last week, Pfizer raised earnings forecasts slightly but also announced it would lay off more than 2, 000 salespeople, a fifth of its marketing force.

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