1 sentence

1. 从销售总额中减去成本，剩下的才是纯利润。

   cóng xiāo​shòu zǒng'é zhōng jiǎn​qù chéng​běn, shèng​xià de cái shì chún lì​rùn.

   Subtract the costs from the total sales revenue, and the remainder is the net profit.

   Source: Dong Chinese Dictionary