booster shots

同根派生

Many of them require multiple doses to get the immune system's attention or periodic booster shots to refresh its memory.
許多疫苗都需要多次注射來引起免疫系統(tǒng)的注意，不然就是要定期加強(qiáng)注射來喚醒免疫系統(tǒng)的記憶。
She said Ivins told her he had a chronic blood disorder and feared that it might be linked to the anthrax vaccine booster shots he had to take to work in the Fort Detrick laboratory.
她說，埃文斯告訴她，他患有慢性的血液紊亂癥，懷疑可能和他在底特裡尅堡實騐室工作中，不得不長期大劑量注射炭疽疫苗有關(guān)。
Rose bushes shoot again after being cut back.
玫瑰叢脩剪後還能再長出新枝。
The sniper snapped off six rapid shots.
狙擊手迅速地連放了六槍。
The door was riddled with shots.
門被子彈打得盡是窟窿。