n.邊際；[醫(yī)]緣

名詞margin的復(fù)數(shù)形式

But there are limits to this strategy, in as much as margins on undifferentiated production have proved low. 但是這樣也有局限性，那些沒有什么差別的產(chǎn)品上面的邊際效益也是很低的。

Store productivity is declining, sales per square foot are falling and profit margins are shrinking. 店鋪生產(chǎn)率不斷下降，每平方英尺銷售量在下跌，邊際利潤在萎縮。