相关单词近义词 shortcoming 缺点, weakness 软弱, snag (隐伏的)障碍..., stumbling block 绊脚石, pitfall 陷阱, problem 问题临近词Downen, down, down packet access, down feather quilt, downfaulted trough, down dip deviation, down for the count, down motor garment, downhole equipment, downdraft gasifier, downhole explosion, downstate Illinois相似词downriver, downs, downscale, downshift, downsize, downspout, downstage, downstairs, 返回 downside