marginaladj.边际的；末端的；仅以微弱多数获胜的；微小的marginal loss边际亏损marginal band边缘条纹marginal rent边际地租marginal pore缘孔marginal wage边际工资marginal seat竞选中的边际席位, 可能被任何一方争取到的席位marginal risk边际风险marginal soil边际土壤marginal zone缘带,缘区marginal veil边缘菌幕