那石级长满了地衣.The stone stairway was covered with lichen.墓碑长满了地衣,已在崩落.The tombstone was lichenous and crumbling.在南极洲所发现的植物只有藻类 、 苔藓和地衣.The only plants to be found in Antarctica are algae, mosses, and lichens....
The use of machinery has superseded manual labour.机器的使用已经取代了手工劳动.Flintlock: Ignition system for firearms early 16 th century, It'superseded the matchlock and the wheel lock.燧发机: 火器点火系统,始于16世纪初, 取代火绳机和转轮打火机转轮打火机.Hand...
A pigeon strutted along the roof, cooing rhythmically.一只鸽子沿着屋顶大摇大摆地走, 有节奏地咕咕叫.He introduced himself as 'the leader' and strutted up and down like a peacock.他自称“领导”，像个孔雀似的趾高气扬地走来走去。The players strutted and posed...
Dauntless in spirit, they became steeled through hardship.他们不屈不挠, 在艰苦的生活中锻炼得更加坚强了.He is a dauntless aviator.他是一位勇敢的飞行家;The goal has now been finally attained through their dauntless and persistent efforts.经过他们百折不挠,再接再励的努...