adj.啞的；愚蠢的；不能說話的

vt.使沉默

She's been dumb from birth. 她生來就是啞巴。

It was dumb of you to say that. 你說那種話真是太愚蠢了。

She was unfairly caricatured as a dumb blonde. 她被不公正地丑化成了一個傻頭傻腦的金發(fā)女郎。

He was struck dumb by her sharp question. 他被她那尖銳的問題弄得啞口無言。

We were struck dumb with horror and grief. 驚恐和憂傷使我們啞口無言。

dumb作“啞的”解時無比較等級。