upcast volcanic ash.
喷出的火山灰
,
投掷之物,排气竖坑的,的upcast volcanic ash.
喷出的火山灰
Don't upcast or chuck the scaffolding materials and don't leave behind the material on scaffolding.
不可以
及下扔
手架材料，不许
手架材料在架子；
"Go down oneself from cliff upcast, fall on the ground before, I learned to fly.
“把自己从悬崖下去，摔到地前，我学会了飞翔。”
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