... cycle n.自行车;周期,循环 v.骑自行车;循环 cylinder n.圆筒,圆锥体;汽缸 cynical a.(对人性或动机)怀疑的，不信世道向善的 ...
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一个星期之内，他拥有了一个500英尺高的圆锥体。
In one week he was the owner of a cone five hundred feet high.
例如，苏铁的雄性圆锥体会脱落近100立方厘米的花粉，其中大部分可能是被风吹散的。
The male cone of Cycas circinalis, for example, sheds almost 100 cubic centimeters of pollen, most of which is probably dispersed by wind.
从侧面不同角度切割圆锥，你便会得到不同的椭圆，直到你的切割角度超过圆锥体侧边的角度。
Cutting the cone at various angles gives you various shapes of ellipse. Until the angle of your cut exceeds the angle of the side of the cone.
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