单词	narrow margin
释义	narrow margin [经] 薄利
随便看	positive regresstion dependence positive regualr positive regular positive regulation positive regulator gene positive reinforcement positive reinforcer positive reinforcers positive reinforcing stimulus positive reinforcing stimuluss positive relationship positive relpica positive reserve positive reserves positive residual metacentric height positive resist positive resistance positive resist pattern positive response positive response zone positive result positive results positive return cam positive-return cam positive-return cam action forming die zzjzrzjr zzkg zzkj zzkk zzkq zzkx zzlc zzlh zzll zzls 跳鞋跳马跳马索儿跳高跳鼠跳龙门跴践践冰践履