指非常卖力地从事艰苦的工作to work hard at a tough job

• 指挥员们在船台上和工人一起摸爬滚打。

  The commanders are hard at it on the slipway along with the workers.

• 创业阶段，夫妻俩摸爬滚打，备尝艰辛。

  When they were founding the enterprise, husband and wife worked extremely hard, experiencing all the troubles of life.