凸槽的英文：
tongue
n. 舌头；语言，方言；说话方式；舌状物
v. 吹奏；舔；批评；嵌接
he spoke with a thick tongue; she has a glib tongue.
他的说话方式很沉稳。
That man has a double tongue.
那人说话不老实。
The tongue cuts the throat
祸从口出,言多必失
They have debased and defiled the purity of the tongue.
他们亵渎玷污了这种语言的纯洁性。
The dog tongued the meat on the ground.
狗用舌头舔了舔地上的肉。