Multipropellant
多元推进剂
🗣️ 情景例句
Their after-sales service was just so bad that I decided to never buy anything from that shop again.
他们的售后服务太差了，所以我决定从此不再能家商店买东西。
Food is necessary to maintain life.
食物是维持生命所必需的。
Where's he going?
他要去哪？