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...
By adopting equiscalar loading to determine the large pollution sources, and proposed the harness countermeasures.在此基础上,结合支流底质及非点污染源的实况, 提出了相应的防治对策....