1、Milk is sold in packs of a liter.(牛奶以1升的包装出售。)
2、She bought a liter bottle of milk.(她买了一升的瓶装牛奶。)
3、We need to havea liter of milk, sugar, and 2kg of meat for the fruit salad.(翻译我们需要一升牛奶、糖和两斤肉做水果沙拉。)
4、It takes over three times as much energy to produce a liter of non-organic milk than a liter of organic milk.(生产一公升的非有机牛奶所需能源，比生产一公升的有机牛奶还要多出三倍以上。)