划算

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

果我们因为穿紧身衣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.

副产的氯化铵溶液在联碱车间成氯化铵、艺合理经济划算。