adj.不能以言語(yǔ)表達(dá)的；壞透了的

There is something unspeakable in these outposts. 邊緣的有些地方難以名狀。

The unspeakable odour clung to the room. 一股難以形容的氣味充斥著房間散不出去。

America's invasion of the country must be done for unspeakable political purpose. 美國(guó)入侵這個(gè)國(guó)家一定是出于不可告人的政治目的。