划算

If we are off by a hair on one flosser, it adds up.

如果我们因为穿紧身衣工人的一根头发而放弃似乎很不划算。

The ammonium chloride is obtained by processing the by-product solution of ammonium chloride in the workshop of coordinative producing alcali.

副产的氯液在联碱车间工成氯、工经济划算。