cleance游隙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-class清洁级clean tillage除草,清耕法clean throughadj.穿洞cleaning plan清洗方案Clean Athlete清白的运动员cleaning bath除尘浴clean conduct行为干净clean receipt清洁支付收据clean process清洁工艺clean a brush把刷子弄干净