Chickens and ducks scratch around the outbuildings.鸡鸭在棚子周围到处乱刨。The track led them to a huddle of barns and outbuildings.那条路把他们带到了一片杂乱拥挤的谷仓和库房.The white blanket lapped over the roofs of the outbuildings of the little farm...
Boron - substituted polyaromatic mesophase prepared by co - pyrolysis of a tar pitch with pyridine - borane complex under autogeneous pressure.以煤焦油沥青和吡啶硼烷为原料采用加压热缩聚工艺制备硼取代聚芳烃中间相沥青....