R-f plumbing
[电] 射频垂铅
🧩 词语组成解析
plumbing
['plʌmiŋ]
n. 水管装置;水暖工的工作;管道工程;
v. 用铅锤测量（plumb的现在分词）;探究;
🗣️ 情景例句
I guess we'll be seeing Alexandra again.
我想我们不久又将见到Alexandra。
I'm very glad to meet you.
认识你很高兴。
It's black. It's a black car.
是黑色的，一辆黑色的车。