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
on the community-center project.
为社区中心的事。
How much should people demand of their governments?
国民对其政府应该要求多少呢？
Did she learn all by herself? How clever.
她全是自己学会的吗？多么聪明啊！