undertaxv.课税太低underprep.低于；在 ... 下；在 ... 内；在 ... 控制下adv.在昏迷中；在 ... 下adj.下面的；从属的；少于的underglazed red釉里红underdeck cargo舱货underhead crack焊面下裂缝under full sail满帆地under-reaming扩孔underpopulationn.人口稀少underhand throw下投,肩下投掷undersea mining海底采矿under-gouging欠切under-pricing[经] 定价偏低