Johnson valve
[机] 约翰笙阀
🧩 词语组成解析
johnson
[['dʒɔnsn]]
n. 约翰逊（姓氏）
valve
[vælv]
n. 阀;真空管;（管乐器的）活栓;（心脏的）瓣膜;
vt. 装阀于;以活门调节;
🗣️ 情景例句
How long has he held office?
他已任职多长时间了？
Switzerland is famous for its milk and cheese.
瑞士的牛奶和奶酪是非常出名的。
I'm looking forward to a prompt reply.
盼迅速答复。