Penetron
n. 介子
??? 情景例句
You'd better watch your step or you'll get into trouble again.
你最好留點兒神， 免得再惹麻煩。
No one is a fool always, every one sometimes.
無人總是當傻瓜，人人有時當傻瓜。
Yes, please do that.
好，那就麻煩你了。