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
She is a particular friend of mine.
她是我特殊的朋友。
The heart of the giver makes the gift dear and precious.
赠予者的心意可使馈赠的东西增加价值而显得珍贵。
Go on until you reach the end. You'll find the park in front of you.
一直走到尽头。公园就在前面。