producer price index的用法和樣例：
例句
- After subtracting food and energy costs, which can vary widely each month, the Producer Price Index for Finished Goods still rose at a moderately fast clip of four-tenths of1 percent, compared with a two-tenth rises in April.
減去食物與能源的費用以後——這兩項每月可能大幅變動——成品製造價格指數仍以略快的速度攀升百分零點四，相形之下，四月份僅上升零點二。
