违背；差失to deviate; to make a mistake

• 屡试不爽

  prove effective every time

• 毫厘不爽

  be perfectly accurate

明朗clear

• 秋高气爽

  the autumn sky is clear and the air is crisp

• 神清目爽

  be in good spirits

爽直frank

舒服，畅快well

• 身体不爽

  not feel well

• 数九寒天吃个火锅，怎一个“爽”字了得。

  Eating a hotpot in the coldest days of winter: to say it feels "great" doesn't even begin to cover it.

• 边打麻将边看球，那才爽呢。

  Playing mahjong while watching the game: that's the life!