K
keep back 阻止,阻挡;隐瞒,保留keep down 控制,压制,镇压;压低,放低(声音)keep from 使…不(做)keep off 不接近,避开keep on 继续不断,保持keep out of 躲开,置身…之外keep to 坚持,保持keep up 保持,维持;继续进行,坚持keep up with 向…看齐,跟上…knock down 撞倒,击倒knock out 击倒,击昏known as 被认为是,被称为