在这10年之间, 铁路运货车厢有了冷藏和加温设备, 以保存容易变坏的产品.But during that decade, railroad cars were refrigerated and heated , helping preserve perishable goods.防止啤酒变坏的主要方法是用纯酵母菌株发酵.The principal methods of avoiding spoilage are the use of p...
The white musicians created the foundation for what is now called Dixieland jazz.这些白人乐队开创了今天所谓南方爵士音乐的先声....an ensemble of young musicians...青年音乐家乐团Traveling with the bands was a broadening experience for the musicians, w...