It was because a lot of workers had been laid off.
这是因为很多工人被解雇。
He said the workers had been purging gas lines all weekend.
他说清洗管道的工人已经工作了整个周末。
So the researchers asked whether any lab workers had been sick during that period.
所以，研究人员询问全体实验室工作人员在此期间有否生过病。
Lester had been famous among the line workers for a magic trick.
莱斯特在一线员工中以一种魔术把戏而闻名。
Social workers discovered that the child had been abused by her father.
社会工作者发现那个孩子曾受她父亲的虐待。
Social workers discovered that the child had been abused by her father.
社会工作者发现那个孩子曾受她父亲的虐待。
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