资料来源 : pyDict

下腹部的,易受攻击的地带

资料来源 : WordNet®

underbelly
     n 1: lower side; "the underbellies of clouds"
     2: the soft belly or underside of an animal's body [syn: {underbody}]
     3: the quality of being weak or unprotected; "the soft
        underbelly of the Axis"- Winston Churchill