look blank [distracted];feel as if bereft of sth.;feel disturbed as if having lost sth.;feel sth. is missing ;

When the children left home, she used to wander around the house as if she'd lost something.
每当孩子们离家后, 她总是若有所失地在屋子前后转来转去.
来源:《简明英汉词典》There comes upon me a sense of chill discouragement of dreary deprivation.
我一定会心灰意冷,怅然若有所失.
来源:词典精选例句His eyes were sharp and piercing , save during those intervals of torpor.
除了偶尔若有所失的时候,他的眼睛总是非常犀利,看人入木三分.
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