N-COUNT
升（米制容量單位，等于1.76英國品脫或2.11美國品脫）
A litre is a metric unit of volume that is a thousand cubic centimetres. It is equal to 1.76 British pints or 2.11 American pints.
例句
...15 litres of water...
15升水
This tax would raise petrol prices by about 3.5p per litre.
這項稅收會使每升汽油價格提高約3.5便士。