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。
用作不及物动词(vi.)
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。
sub英英释义
Noun:
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
Verb:
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"
