cone shadow 影锥
At left, the sky outside the shadow cone is still bright.
左边，影锥之外的天空仍然是明亮的。
An ash cone rises from the center of the crater, casting a dark triangular shadow.
火山口中间是火山灰锥，投下了三角形的暗影。
Within the shadow of the ash cone lies a white, funnel-shaped inner crater that is 200 meters deep.
在三角形的暗影里是深达200米的白色漏斗形内心火山口。
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