n.噸位；噸數(shù)
The ship has a tonnage of twenty thousand. 這艘船的噸位是2萬噸。
This landing vessel has the largest tonnage in our country. 這是我國目前最大噸位的登陸艦。
Usually the dues are calculatedon the registered tonnage of the ship. 通常港口稅是以船只的注冊噸位計(jì)算的。
