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
No. It has three bedrooms and three baths.
不。这栋房子有三间卧室、 三间盥洗室。
Thank you but this is something I have to decide alone.
但有些事情我必须自己作决定。
What are these?
这些是什么啊？