boost·er

noun

/ˈbuːstə(r)/

/ˈbuːstər/

(also booster rocket)
a rocket that gives a spacecraft extra power when it leaves the earth, or that makes a missile go further助推器Topics Spacec2
a device that gives extra power to a piece of electrical equipment（电器的）升压机，升压器
an extra small amount of a vaccine that is given to increase the effect of one given earlier, for example to protect you from a disease for longer（疫苗）加强剂
- a tetanus booster破伤风疫苗加强剂
Topics Healthcarec2
a thing that helps, encourages or improves somebody/something帮助（或激励、改善）…的事物
- a morale/confidence booster士气／信心的激励
Topics Change, cause and effectc2
(especially North American English) a person who gives their support to somebody/something, especially in politics（尤指政治上的）支持者，拥护者
- a meeting of Republican boosters共和党支持者的会议

单词	booster
释义	boost·er noun /ˈbuːstə(r)/ /ˈbuːstər/ (also booster rocket) a rocket that gives a spacecraft extra power when it leaves the earth, or that makes a missile go further助推器Topics Spacec2 a device that gives extra power to a piece of electrical equipment（电器的）升压机，升压器 an extra small amount of a vaccine that is given to increase the effect of one given earlier, for example to protect you from a disease for longer（疫苗）加强剂 a tetanus booster破伤风疫苗加强剂 Topics Healthcarec2 a thing that helps, encourages or improves somebody/something帮助（或激励、改善）…的事物 a morale/confidence booster士气／信心的激励 Topics Change, cause and effectc2 (especially North American English) a person who gives their support to somebody/something, especially in politics（尤指政治上的）支持者，拥护者 a meeting of Republican boosters共和党支持者的会议
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