cleaning: n.1.清洁法；扫除；清洗，洗涤；(种子的)清选。2.〔常 pl.〕(牛、羊等的)胞衣。3.【林业】除伐。4.〔pl.〕垃圾。5.〔口语〕(比赛等的)惨败，输光。6.〔口语〕巨额利润。短语和例子a general [thorough] cleaning大扫除。 take a cleaning (球队等)惨败。
cleaner: n.1.清洁工人；(干洗)洗衣工人。2.洗衣店(老板)。3.除垢器。短语和例子a lower cleaner【纺织；印染】下绒辊。 take sb. to the cleaners 〔俚语〕把(某人)钱财骗光，使输光。
The rare - earth - zirconium composite oxides which have high thermal stability and high storage of oxygen are getting more and more attention in the automotive exhaust cleaning field 摘要由于其良好的储放氧能力和热稳定性，以铈为主的铈锆氧化物在汽车尾气的处理中得到了越来越广泛的应用。
