Smoleless propellant
[化] 无烟推进剂
🧩 词语组成解析
propellant
[prə'pelənt]
adj. 推进的;
n. 推进物;
🗣️ 情景例句
Richard, isn't that too much to ask of your mother?
Richard，那是不是太麻烦你母亲啦？
Let's talk over dinner.
我们边吃边谈吧。
Has it ever happened to you?
这种事情在你身上出现过吗？