A steep swoon in housing construction is starting to put large Numbers of laborers out of work but fewer skilled employees.
房地产方面的大幅衰退导致大量劳动力失业，但是技术型人员极少。
The workers on the construction site should put on their safety helmets before starting to work.
建筑工地上的工人在开始工作以前都必须戴上安全帽。
The workers on the construction site should put on their safety helmets before starting to work.
建筑工地上的工人在开始工作以前都必须戴上安全帽。
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