资料来源 : pyDict

掘土以掺进;专心致志地干起来

资料来源 : WordNet®

dig in
     v 1: occupy a trench or secured area; "The troops dug in for the
          night" [syn: {entrench}]
     2: eat heartily; "The food was placed on the table and the
        children pitched in" [syn: {pitch in}]