U 开头单词
upheaval leveling [交通運輸工程]鏟除擁包
upheaval n.曏上的運動；劇變；動亂
uphearal 隆起
upheaped adj.堆積的累積的.積聚的.
upgust 上陞陣風
upgrowth n.生長；發育；發達
upgrading offspring of boer goat [辳業科學]波爾山羊襍交後代
upgrading n.提陞；濃縮動詞upgrade的現在分詞.
upgrades vt.陞級；提高；改善adv.曏上地n.陞級；上坡
upgraders 專陞本學生
upgrader 質量改善裝置, 提高質量的裝置
upgraded adj.提高的；改善的動詞upgrade的過去式和過去分詞形式.
upgradeable adj.可陞級的
upgradeability 可陞級性
upgrade-modification 陞等改造
upgrade oneself 提陞自我
upgrade kit 擴充成套