It is kept busy all the time, and thus regarded as "a non-stop working hand".

它永远都在忙碌着，因而被称为“永不休憩的工作者”。

youdao

It is kept busy all the time, and thus regarded as "a non-stop working hand".

它永远都在忙碌着，因而被称为“永不休憩的工作者”。

youdao