Pavlov's dogs were conditioned to drool at the sound of a bell.巴甫洛夫的狗一听到铃声就会习惯性地流口水。He wiped the drool from the baby's face.他把婴儿脸上的口水擦掉了。Men who have met her drool for days afterwards.见过她的男人过后要为她痴迷好些天。Babies drool a lot when they are teething.宝宝长牙的时候爱流口水。