打折: to give a discount...
用于: use in, use on, use for...
百科全书: encyclopedia...
忙: busy, hurriedly, to hurry, to rush...
鼓: drum, to drum, to strike, to rouse, to bulge, to swell...
达到: to reach, to achieve, to attain...
出丑: shameful, scandalous, to be humiliated, to make a fool of sb or oneself, to make sb lose face...
丛: cluster, collection, collection of books, thicket...
笨重: heavy, cumbersome, unwieldy...
观念: notion, thought, concept, sense, views, ideology, general impressions...
