垫: Ⅰ动词1.(用东西支、铺或衬, 使加高、加厚或平正) put sth. under sth. else to raise it or make it level; fill up; pad 短语和例子垫路 repair a road by filling the holes; 桌子腿底下垫点纸就平了。 put a wad of paper under the leg of
铅: 铅名词1.(金属元素) lead (pb) 短语和例子废铅 scrap lead; 含银铅 argentiferous lead; 软铅 soft lead; 重得像铅。 it's as heavy as lead.2.(铅笔心) lead (in a pencil); black lead
