shown their ivories

• v. 露出牙齿(咧着嘴笑)

shown their ivories的用法和样例：

例句

用作动词 (v.)

1. They roar at each other, baring their teeth, arms spread wide, fingers curled into imitation claws.I must watch this, impassive.Sand trickles in to fill the useless furrow.
   然后两个人就相互大吼大叫，露出牙齿，张开双臂，弯曲手指做爪子样。