profit margins decline的用法和樣例：
例句
- A sluggish economy and increased competition brought about by economic reforms are squeezing profit margins.
市場(chǎng)需求不旺，經(jīng)濟改革加劇了行業(yè)競爭，導致公司利潤率下降。 - Higher crude oil and natural gas realizations and improved marketing margins were partly offset by lower chemical margins.
原油與天然氣價(jià)格上漲以及銷(xiāo)售利潤率提高部分抵消了化學(xué)產(chǎn)品利潤率下降的影響。
