n. 1。(门、抽屉的)球形把手，球形柄;2。(收音机等的)旋扭;3。小块 　　A: What happened to your knuckles ? They are bleeding. 　　B: Oh, I cycled in a wall and grazed them. 　　knuckle 　　n. 指节 　　vi. 1. 开始努力工作;2.屈服 　　L 　　A: Be careful, your laces are undone. 　　B: Oh, I never learned how to tie them properly. 　　lace 　　n. 1.网眼花边，透空织品，花边;2.鞋带，系带 　　vt. 用系带束紧 　　A: Sorry I’m late, my alarm did not go off on time. 　　B: That is a lame excuse, don’t let it happen again. 　　lame 　　a. 1.跛的，瘸的;2.站不住脚的，差劲的，蹩脚的 　　A: I am lamenting the loss of my dear friend. 　　B: Goodness, what happened to him? 　　lament 　　vt. 1.哀悼，痛惜;2.抱怨，为...而遗憾 　　vi. 哀悼，悲痛 　　n. 挽歌，悼词 　　A: I am going to the lake to float some lanterns . 　　B: It would be best to wait until it is dark. 　　lantern 　　n. 灯笼，提灯