booster

3.加强剂量an extra small amount of a drug that is given to increase the effect of one given earlier, for example to protect you from a disease for longer

4.帮助（或激励、改善）…的事物a thing that helps, encourages or improves sb/sth

5.（尤指政治上的）支持者，拥护者a person who gives their support to sb/sth, especially in politics

1.〔技〕增压器

2.〔空〕助推,助推器

3.助爆剂

4.引爆剂

5.〔美口〕援助者,后援者,煽动买风的人

6.向上推者

7.支持者

8.点火棒

9.〔美俚〕(假扮顾客行窃的)店铺扒手,足球运动员

10.【电学】升降压器,调压电阻,【机械工程】升压机[泵],【导弹】助推器,多级火箭的第一级,【无线电】(电视等的)放大器,【原子能】增益棒,【军事】助爆药,〔美国〕辅助机车,【药学】辅助药剂,转播站

11.火箭助推器

1.a small extra amount of a medical drug that you are given so that a drug you had before will continue to be effective

2.something that makes you feel more confident, more healthy, etc.

3.an extra engine on a spacecraft that gives it enough power to leave the Earth’s atmosphere

4.someone who publicly supports a person, plan, or organization