1. 加强剂量：booster 促进者 | booster dose 加强剂量 | borborygmus 腹鸣
2. 激发剂量：book lung 书肺 | booster dose 激发剂量 | borate 硼酸盐
3. 加强剂：Blood exchange transfusion 换血 | Booster dose 加强剂 | Circumcision 包皮环割(切)术
4. 激发剂量, 促升剂量：booster diode || 升压二极管 | booster dose || 激发剂量, 促升剂量 | booster element || 增益元件
noun
1. an additional dose that makes sure the first dose was effective
Synonym: booster booster shot recall dose