Penetron tube
[计] 射线穿透管
🧩 词语组成解析
n. 介子
🗣️ 情景例句
Yes, this is my youngest son Robbie.
是的 这是我的小儿子Robbie。
I often study in the morning.
我常常在早上读书。
We ate our sandwiches and a bar of chocolate each and began to feel better.
我们俩都吃了三明治和一块巧克力才感到舒服些了。