1890, "one who boosts" something, agent noun from boost (v.). Electrical sense is recorded from 1894. Young child's booster chair is attested under that name from 1960.
雙語例句
1. The combination of sex and treachery proved a copper-bottomed circulation booster.
事實(shí)證明，性和背叛的話題結(jié)合起來無疑大大增加了發(fā)行量。
來自柯林斯例句
2. It was amazing what a morale booster her visits proved.
令人驚詫的是，她的訪問大大鼓舞了士氣。
來自柯林斯例句
3. This win has been a great morale booster.
這次獲勝是一次巨大的精神鼓舞。
來自柯林斯例句
4. Praise is a great confidence booster.
贊揚(yáng)是一種很好的信心增強(qiáng)劑。
來自柯林斯例句
5. This battery booster is a boon for photographers.