profitable room的用法和樣例：
例句
- Mr.Atkins said that costs had risen quickly as the market fell, leaving the developers little room for profit.
阿特金斯先生說成本上升而行情回落，使炒房客的利潤空間變得很小。 - Profitable niches don't last long, because market forces always drive down prices and profits.
有利潤空間的縫隙市場不會維持很久，因為來自市場的力量總是會把價格和利潤壓低。
