solid propellant boosters的用法和樣例：
例句
- NASA is now checking on the damage of lightning on Endeavor and its solid rocket booster.
國家航空航天署正在檢查奮進(jìn)號航天飛機及其固體火箭助推器是否被閃電損壞。 - There are prospects for reducing solid booster costs to make them financially more competitive.
從長(cháng)遠的觀(guān)點(diǎn)看，就降低成本來(lái)說(shuō)，固體助推器更具有競爭能力。
