Or will a booster vaccine be necessary?(或者有必要再加強一針嗎？)

NASA crashed an empty rock booster into the moon to see if water-ice crystals were at the South Pole.(NASA將一枚空巖助推器撞向月球，以探測在月球南極是否存在水冰晶體。)

Another budget booster.(另外的預算在大增。)

Some experts say booster shots might still be needed every 10 years or so.(一些專家說，也許每過十年左右還要做一次加強注射。)

Because getting attention from beautiful women feels good, it's a confidence booster.(得到更多的女性青睞，男人自我感覺良好，變得自信滿滿。)

The huge, showy booster rockets fallen away, it was just a little glider or an aeroplane.(巨大顯眼的助推火箭脫離后，它看上去只是架小型滑翔機或飛機。)

The booster will burn for about 60 seconds, enabling engineers to validate and test its performance.(該助推器將會燃燒大約60秒左右，使的工程師可以對它的性能可以進行證實與測試。)

Even in a time of climate change, it's hard to be a nuclear booster.(即便是在氣候變遷時代，要成為一名核子支持者也相當困難。)

God functions as a kind of booster for the absoluteness of self.(作為一個助推器的一種絕對的自我上帝職能。)

However, they also give us access to our favorite tunes, and we all know music is a great mood booster.(然而，它們也讓我們可以分享最喜歡的曲子，并且我們也都知道音樂是最偉大的情緒增進劑。)