dig in

动词 dig in:

1. occupy a trench or secured area
   同义词：entrench
2. eat heartily
   同义词：pitch in

1. The enemy scarcely had time to dig in before our assault was on.
   敌人还没来得及挖好掩体，我们的进攻就开始了。
2. The officer ordered his men to dig in.
   军官命令部下挖战壕自卫。
3. A sharp dig in the ribs.
   给肋骨上狠狠的一推
4. The food's ready, so dig in!
   吃的弄好了，放量吃罢。