In team games such as football, a sub is a player who is brought into a match to replace another player.
例句
We had a few injuries and had to use youth team kids as subs.我们有几名队员有伤，只好用青年队的小队员做替补。
N-COUNT
同 submarine
A sub is the same as a submarine .
N-PLURAL
(向俱乐部、协会缴纳的)会员费
A fixed amount of money that you pay regularly in order to be a member of a club or society is called your subs .
例句
Subs will be raised as from next year.从明年开始将提高会费。
英汉词典释义
n.
潜水艇
代用品, 代替者, 替补队员
England brought on a sub in the second half.英国队下半场换上了一名替补队员。
（向俱乐部等定期交纳的）会员费
审校员; 助理编辑
vt.
做替身, 做替补队员
审校(文稿)
英英词典释义
Noun
1. 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
2. a submersible warship usually armed with torpedoes
Verb
1. 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"
行业词典
体育： 替补员；候补队员；
土木工程： 底碴；sub-ballast；
大气科学： ［卫星］星下点；sub-satellite point 卫星在围绕地球运行的轨道上的瞬时位置与地球中心之连线在地面上的交点。；