Vacuum tubes
[医] 真空管
🧩 词语组成解析
n. 管子, 导管；管状虫；伦敦地铁（tube的复数）
🗣️ 情景例句
Paper or plastic?
现金还是信用卡？
Do you have an opinion?
你有意见吗？
In the letter he was asked to call at the station.
要他到警察局去一趟。