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
It's Grandma's recipe.
这是奶奶的配方。
Thank you but this is something I have to do on my own.
但有些事情我必须自己做主。
This decline in vigour with the passing of time is called ageing.
生命力随时间的流失而衰退叫做衰老。