BOOK 21.“atn.”短语荟萃at war处于交战状态at hand在身边;在附近at length最后;详细地 at sea在海上;困惑at work在工作 at peace处于和平时期2.look的相关短语小结look into调查;审查look forward to盼望look through快速看;浏览look up to尊敬look down upon瞧不起 look out for警惕