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
going to the children's ward once or twice a week
每星期就去小儿科病房一、两次
Any personal hobbies such as sports, music and collecting stamps never had a place in his life.
任何一种个人的业余爱好，如体育活动，音乐，集邮等等在他的生活中从未有过地位。
Unfortunately, the show was one of the dullest we have ever seen.
不幸的是，这次演出是我们看过的最乏味的演出了。