per kilogram的用法和樣例：
例句
- Apple costs five dollars a kilogram.
蘋果每千克五美元。 - The peroxide value is usually expressed in terms of milliequivalents of oxygen per kilogram of fat.
過氧化值常用每千克脂肪中氧氣的毫克數表示。 - These apples cost five yuan per kilogram.
這些蘋果每公斤五元。 - We are prepared to order 20 cases of black tea at 10 pounds per kilogram.
我公司準備訂購二十箱紅茶，每公斤十英磅。
