例句：Andy sharpened the edge of his knife on a grindstone.
安迪在磨石上磨快了他的刀刃。
hedge n. 树篱，障碍物
例句：Will the hedge keep the sheep out of the field?
这篱笆能将羊群挡在田地外面吗?
pledge n.保证，譬言，抵押，抵押品vt.保证，抵押，典当
例句：Take this ring as a pledge of our love.
请接受这个戒指作为我们爱情的誓言。
wedge n.楔vt.楔人，楔进
例句：Brant had a banana and a wedge of cheese for lunch.
布兰特中饭吃了一根香蕉和一块楔形的奶酪。
badge n.徽章，证章
例句：Charles was awarded a merit badge for his bravery in the battle.
查尔斯因为在战斗中的勇猛被授予一枚奖章。
