Annular tubes
[化] 套管
🧩 词语组成解析
annular
[['ænjulə]]
a. 环形的\\n[医] 环状的
n. 管子, 导管；管状虫；伦敦地铁（tube的复数）
🗣️ 情景例句
He gave them to me to hold on to them
他给我戒指， 要我自己保管，
One thing, however, that we should not forget in doing business is to have a sense of appreciation.
可是有一件事我们做生意时不能忘，就是保持一份感恩的心情。
I doubt it.
我怀疑。