柯林斯词典keel over (keeling,keeled,keels) 1. PHRASAL VERB If someone keels over, they collapse because they are tired or ill. (因疲倦或疾病而) 倒下[非正式] He then keeled over and fell flat on his back. 然後他就倒下了，仰麪朝天。 返回 keel over