It's been one of the coldest autumns for years.这是多年来最冷的秋天.Autumns and winters were high - occurrence seasons for the flu.秋冬季是流感的高发季节.Curled up to fall for a ground autumns.卷起落了一地的寂秋....
We hiked the Grand Canyon, exploring Indian cliff dwellings.我们去大峡谷徒步旅行，探究印第安人的崖居。We will be exploring different approaches to gathering information.我们将探索收集信息的不同方法。This ship was designed expressly for exploring the Arctic...