Penetron tube
[计] 射线穿透管
🧩 词语组成解析
n. 介子
🗣️ 情景例句
We're in no great rush. It's true.
我们不是很急， 这是真的。
Let the hands get busy, not the mouth.
手要勤劳，嘴莫多说。
Sometimes a tame elephant is tethered nearby to give the wild one confidence,
有时，把一头已驯服的象拴在旁边能给野象以信心。