The old woman dresses as ugly as sin.

这个老女人穿着很丑陋。

youdao

Even now, the expression "as ugly as sin" has not quite passed from the language.

即使时至今日，ﱠ“丑如罪恶”这种表达也没有被人遗忘。

youdao

We certainly don't know why she wants to marry him. He's as ugly as sin, and his brains are nothing to write home about.

我们简直不明白她为什么想跟那个男人结婚，论相貌，其丑无比，论头脑，也是稀松平常。

youdao

Their goggles were strong and durable, but ugly as sin and uncomfortable to wear (think about those clear plastic, one size does not fit anyone goggles worn in many factories).

FORBES: Think Outside the Goggles!