1N-COUNT [usually n NOUN]有正面效果的事物;起推动作用的事物 A booster is something that increases a positive or desirable quality. 有正面效果的事物;起推动作用的事物
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。
Praise is a great confidence booster.
赞扬是一种很好的信心增强剂。
2N-COUNT 火箭助推器;推进器 A booster is an extra engine in a machine such as a space rocket, which provides an extra amount of power at certain times. 火箭助推器;推进器
Ground controllers will then fire the booster, sending the satellite into its proper orbit.
然后地面控制人员将会发射推进器,把卫星送入正常轨道。
3N-COUNT 加强剂量 A booster is a small injection of a drug that you have some time after a larger injection, in order to make sure that the first injection will remain effective. 加强剂量
4N-COUNT [NOUN n]拥护者;热心支持者 A booster is someone who supports a sports team, organization, person, or place very enthusiastically. 拥护者;热心支持者 [US]
A former associate of Mr. Pierce's was among the project's boosters.