For several years, Bill Wirtz has been performing in small clubs and honky-tonks from Maryland to the Carolinas.几年来，比尔·沃茨一直在马里兰州和南北卡罗来纳州之间的小型俱乐部和低级酒吧里表演。There are a number of honky - tonks in the small town.小镇上有许多下等低级的酒吧...
他用一块桦木做一只小船.He used a piece of birch to make a small boat.只有杨木和桦木的原木出货高于去年.Only Poplar and Birch log shipments are up for the year.利用均匀设计法优化了微波辅助提取白桦树皮中桦木醇的工艺.The microwave - assisted extraction ( MAE ) of betulin from B...