正方体的俯视图是______，圆锥的主视图是______．
正方体的俯视图是 正方形，圆锥的主视图是 三角形．
故答案为：正方形，三角形．
仿译词
The eye of a hurricane is surrounded by dense black cumulonimbus clouds which are called the（）.
A.Wall cloud
B.Nimbostratus cloud
C.Bar
D.Funnel
