cleansn.精煤(=clean coal)v.打扫,清扫(动词clean的第三人称单数)
cleanadj.干净的;纯洁的;完全的;空白的;正当的;精准的adv.完全地n.清洁v.打扫;清扫;擦,刷
clean shoes把鞋刷干净
clean float清洁浮动
cleaning pin煤气灯嘴通针
cleaning bee清洁峰
clean degree洁净程度
cleaning gas清洗气
cleanout bit清底钻具
clean animal清洁动物
clean record清白的履历
clean B/L清洁提单