[C] 代用品，代替者，替补队员 substitute,especially in football or cricket
[P] (上交俱乐部的)会员费 subscription to a club,etc.
a large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States
a submersible warship usually armed with torpedoes
be a substitute;
"The young teacher had to substitute for the sick colleague"
"The skim milk substitutes for cream--we are on a strict diet"
Local radio reported that the sub had oxygen tanks. 当地广播报导，这艘潜艇内配备氧气桶。
The nuclear-powered submarine can overrun any other sub. 核动力潜艇能比其他任何潜艇驶得快。
I had to sub for the referee, who was sick. 裁判病了，我得代为裁判。
Clive Walker came on as a sub and starred. 克里夫-沃克替补上场，大放异彩。
Our aircraft sank the sub by dropping depth bombs. 我们的飞机用深水炸弹炸沉了潜艇。
England brought on a sub in the second half. 英国队下半场换上了一名替补队员。
Have you paid your tennis-club sub yet? 你付了网球俱乐部的会员费了吗？