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boost.erH5bU:7stE5, $5-stLn [C]帮助推起之物;声援;鼓舞;积极的拥护者;起推动作用的事Certainly, a successful end to the war will be a confidence booster.当然，战争圆满结束极大地增强了人们的自信心。Seeing the poor performance of their opponents the previous day was a great morale booster to the young team.前一天看到对手差劲的表现令年轻队员们的士气大增。The two rocket boosters attached to the shuttle's belly drop back to sea and are reused.安装在航天飞机腹部的两台火箭助推器掉回大海，被重新利用了。A booster seat is a removable extra seat put onto a car seat for a child to sit on in order to make the child high enough for the seat belt to fit safely.（汽车内为孩子垫高座位以便系安全带的)垫座
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