(as)... as sin

(informal)having a particular undesirable quality to a high degree

(非正式)非常，极端地

as ugly as sin.

非常丑。

miserable as sin.

极其糟糕。

for one's sins

(humorous, chiefly Brit.)used to suggest that a task or duty is so onerous or unpleasant that it must be a punishment

(幽默，主英)遭报应

live in sin

(informal, dated)live together as though married

(非正式，旧)同居

sin of commission

a sinful action

罪过

sin of omission

a sinful failure to perform an action

疏漏，失职