the soft part in the mouth that moves around, used for tasting, swallowing, speaking, etc.
He clicked his tongue to attract their attention.
他咂嘴发出啧啧声以吸引他们的注意。
She ran her tongue over her lips.
她用舌头舔着嘴唇。
It’s very rude to stick your tongue out at people.
向别人吐舌头是非常不礼貌的。