n.[C][U]

1. （船舶的）吨位
2. （一国或一港口的）船舶总吨数
   There were heavy losses in Britain's merchant tonnage during the Battle of the Atlantic.

   在大西洋海战中英国的商船遭受了巨大的损失。

3. 船舶吨税
4. （在港口或运河上对每吨货物征收的）吨通过税，吨通行费
5. 以吨计算的重量，总吨数

n.

1. weight in tons.
2. the size or carrying capacity of a ship measured in tons.
   ▸shipping considered in terms of total carrying capacity.