久久国产欧美日韩精品,日韩国产精品久久久久久亚洲,99视频精品全部免费免费,91精品国产综合久久走光

observatories的音標(biāo)：...

n.天文臺(tái)，氣象臺(tái)( observatory的名詞復(fù)數(shù) )...

Meteorologists use satellites, land observatories and historical data to provide information about the weather.氣象學(xué)家使用衛(wèi)星 、 上天文臺(tái)和歷史資料來提供有關(guān)天氣的信息.Since they were excellent astronomers, some think that they also used their py...