in a way that gives too much attention to small details and wants everything to be correct and perfect

fastidiously dressed 衣着极为考究

These were the rules, and she stuck fastidiously by them. 她极其严格地遵守这些规则。

He took it apart and examined it fastidiously. 他把它拆开，仔细检查。

in a way that shows that you have a very strong dislike of anything dirty or unpleasant

fastidiously clean 有洁癖

He wiped his hands fastidiously between mouthfuls. 他每吃一口都要讲究地擦擦手。