资料来源 : pyDict

用木桩固定;约束,限制…

资料来源 : WordNet®

peg down
     v 1: fasten or secure with a wooden pin; "peg a tent" [syn: {peg}]
     2: define clearly; "I cannot narrow down the rules for this
        game" [syn: {pin down}, {nail down}, {narrow down}, {narrow},
         {specify}]