aspen/ˈæs.pən/名词(欧洲)山杨;(北美)大齿杨On our walk along the river we passed thundering waterfalls and quivering aspens.我们沿着河岸散步,一路经过了雷鸣般的瀑布和摇曳的山杨树。想跟读,去练习