详细解释:n. 通过船闸, 船闸通行税, 船闸系统
英语解释：
名词 lockage:
a fee charged for passage through a lock in a canal or waterwaya system of locks in a canal or waterwaypassage through a lock in a canal or waterway详细解释：
lock.age
n.（名词）The passage of a ship through a lock.船只通过水闸A toll paid for the use of a lock.水闸通行税：为使用一个水闸而交的费用A system of locks.水闸系统