曾有一群雄鹿,仅一边有角.A family of stags once existed with an antler only on one side.善游泳, 喜群居, 雄有角 、 雌无角.Good, male, like to swim with horns, female without horn.参考是对动物的有角的头.The reference is to the horned head of an animal....
Fans may undergo body searches by security guards.球迷可能要接受保安人员的搜身检查。to undergo minor surgery做小手术The planes have to undergo rigorous safety checks.飞机必须经过严密的安全检查....