marginalin臀腺素marginaladj.边际的；末端的；仅以微弱多数获胜的；微小的marginal membrane边缘膜marginal invasion边缘侵占marginal producer边际生产者marginal business边际营业marginal activity收支勉强平衡的营业活动marginal medicine跨科医术marginal gingivtis缘龈炎marginal increment边际增量marginal detection边缘识别marginal dimension边缘尺寸