Penetron
n. 介子
🗣️ 情景例句
When my grandpa is in a bad mood, he's grouchy with everyone.
爷爷脾气坏的时候，对所有的人都不满意。
I couldn't get through.
我打不通。
East,west，home is best.
金窝，银窝，不如自己的草窝。