这句话怎么理解?The number of 16 year olds entering the labour force peaked in the late 1970s

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这句话怎么理解?Thenumberof16yearoldsenteringthelabourforcepeakedinthelate1970s这句话怎么理解?Thenumberof16yearolds

这句话怎么理解?The number of 16 year olds entering the labour force peaked in the late 1970s
这句话怎么理解?The number of 16 year olds entering the labour force peaked in the late 1970s

这句话怎么理解?The number of 16 year olds entering the labour force peaked in the late 1970s
16岁步入劳动力大军在1970年后期达到顶峰.
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16岁就成为劳工的人数在1970年末达到顶峰