(as)... as sin

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

(非正式)非常，極端地

as ugly as sin.

非常丑。

miserable as sin.

極其糟糕。

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)遭報(bào)應(yīng)

live in sin

(informal, dated)live together as though married

(非正式，舊)同居

sin of commission

a sinful action

罪過

sin of omission

a sinful failure to perform an action

疏漏，失職