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
Please sit down, Mr. Mark.
请坐吧，马克先生。
I wondered if you could buy me some pencils?
我不知道你是否能替我买铅笔？
Could you come here, please? I want some help.
你能来这儿一下吗？我需要帮忙。