adj.固若金湯的；無法傷害的

The banks are not invulnerable. 銀行并非固若金湯。

The submarine is invulnerable to attack while at sea. 潛艇固若金湯，海上攻擊打不倒。

They are invulnerable, because no animal can actually kill them. 因?yàn)闆]有動(dòng)物能實(shí)際上殺他們，所以他們是不會(huì)受傷害的。

The dangerous drivers are those who think they're invulnerable. 那些危險(xiǎn)駕駛的人就是以為自己不會(huì)受傷。