n. 边缘；（期权）保证金；利润；边际（margin的复数）

n the boundary line or the area immediately inside the boundary

n an amount beyond the minimum necessary

n the amount of collateral a customer deposits with a broker when borrowing from the broker to buy securities

n (finance) the net sales minus the cost of goods and services sold

n the blank space that surrounds the text on a page

n a permissible difference; allowing some freedom to move within limits