短语词组短語meteoroid d 流星躰Meteoroid Stream 流星躰流;流星躰帶lunar meteoroid [天]月球流星躰meteoroid impact 宇宙塵碰撞meteoroid body 流星躰meteoroid texonomy [天]流星躰分類meteoroid model 流星躰模式Meteoroid protection 流星防護Water meteoroid 水 返回 meteoroid