骑士的盔甲，为什么那么重？

Knights wore metal armor in old times. 古时候骑士穿着金属盔甲。 The armor had to block swords and spears. 盔甲得挡住刀剑和长矛。 So a full suit weighed like a heavy bag. 所以一整套有几十斤重。 A knight could not mount his horse alone. 骑士自己都上不去马。 He needed friends to help him up. 得有人帮忙才能上去。 But the armor made him hard to hurt. 不过穿上它，敌人很难伤到他。