Underseal
vt. （为防尘）密封（汽车）底部
✅ 同义词
📖 牛津释义
underseal
(Brit) (US undercoat) n [U]
tar-like or rubber-like substance used to protect the under-side of a motor vehicle against rust, etc （机动车底部的）防蚀涂层. underseal, v [Tn] coat the under-side of (a motor vehicle, etc) with a protective seal 用防蚀涂层涂（机动车等）的底部.
🗣️ 情景例句
I've got extra time on my hands.
我有过多空闲时间。
Flying volcanic bomb
喷燃着的火山弹
when he knew that he was dying, he made me promise to go on my own.
他知道自己已奄奄一息，于是他要我答应一定单独回故乡一趟。