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
Oh, Susan, thank you so much
噢 ，Susan ，谢谢你。
Yes, I worked from early morning until late at night.
是,我从清早工作直到半夜。
A man was walking through a wood and he came across a woodcutter.
一个人正步行穿过一片树林，他遇见一个伐木工人。