armed to the teeth意思是 "全副武装" 或 "武装到牙齿"。这个短语通常用来描述某人或某个团体非常强大，配备了大量的武器和装备。

【例句】
The soldiers were armed to the teeth with guns, grenades, and body armor.
士兵们全副武装，配备了枪支、手榴弹和防弹衣。

They were armed to the teeth, ready for any emergency.
他们已全副武装，随时准备应急。