plumes from the volacnoes extend to more than 300 kilomters above the surface,with material being ejected at speeds up t

分类: 作业答案 • 2022-05-31 15:34:45

问题描述：

plumes from the volacnoes extend to more than 300 kilomters above the surface,with material being ejected at speeds up to a kilometer per second.5093

答

火山（volcano）的烟尘在地面上飘散（扩展）出超过300千米,（同时）那些物质被以1千米每秒的速度喷射出.（直译）