The workers are subtly doing their best to keep it going and to extend it
问题描述：
The workers are subtly doing their best to keep it going and to extend it
答
工人们正在尽最大努力精心维系并推广这个
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答
工人们尽最大力量巧妙地维持它继续向前，并延伸它。
答
工人们都隐蔽地尽自己最大的努力去维持它并扩大它.