短語(yǔ)詞組短語(yǔ)observation balloon detail 觀察氣球air observation balloon 探空氣球air r observation balloon 探空氣球unmanned observation balloon [氣象][航]無(wú)人觀測(cè)氣球an observation balloon 觀測(cè)氣球the release of observation balloon 釋放觀測(cè)氣球balloon observation 氣球觀測(cè)pilot balloon observation 測(cè)風(fēng)氣球觀測(cè)pilot t balloon observation 測(cè)風(fēng)氣球觀測(cè) 返回 observation balloon