At least one avian disease pathogen has been found.已经发现至少有一种禽病的病原体.China last week reported its first two cases of avian influenza.上周中国首次报告了两例禽流感病例.Be in avian sensory in, most is the organ that degrades first?在鸟类的感觉器官中,...
golfers practising their swings练习挥杆动作的高尔夫球手She spent hours practising the breast stroke.她花了数小时练习蛙泳。An art historian and collector, he was also a practising architect.他身为艺术历史学家和收藏家，同时也是一名从业建筑师。As we have been practising r...