The old woman dresses as ugly as sin.

这个老女人穿着很丑陋。

youdao

But the models themselves are still ugly as sin. Gorillas without hair.

但人物本身的模型真是奇丑无比，跟没毛的大猩猩一样。

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

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!