Wall bushing
[电] 穿壁套管
🧩 词语组成解析
n. 轴衬, 套管\\n[化] 衬套; 管衬; 轴瓦
🗣️ 情景例句
Fifty years? Wow!
五十年？ 喔！
Are you clear in your own mind what you ought to do.
你自己是否清楚该做什么？
Why was that?
为什么呢？