美[ˈbustɚ] 1 . The combination of sex and treachery proved a copper-bottomed circulation booster .
事实证明，性和背叛的话题结合起来无疑大大增加了发行量。
来自柯林斯例句
2 . It was amazing what a morale booster her visits proved.
令人惊诧的是，她的访问大大鼓舞了士气。
来自柯林斯例句
3 . This win has been a great morale booster .
这次获胜是一次巨大的精神鼓舞。
来自柯林斯例句
4 . Praise is a great confidence booster .
赞扬是一种很好的信心增强剂。
来自柯林斯例句
5 . This battery booster is a boon for photographers.
这种电池充电器是摄影工作者的好帮手。
来自柯林斯例句
1.a person who backs a politician or a team etc.;
all their supporters came out for the game
2.someone who is an active supporter and advocate
3.a thief who steals goods that are in a store
4.the first stage of a multistage rocket
5.an additional dose that makes sure the first dose was effective
