难以形容的

The beauty of a sunset is ineffable.

日是难以形容。

The unspeakable odour clung to the room.

一股难以形容气味充斥着房间散不出去。

It did not exactly beggar description, but it certainly had word on the lookout for the mendicancy squad.

虽然不能说绝对难以形容际上，确与贫民窟也相差无几了。