Keep the drill steady while it ascends and descends.打钻和提钻时要保持钻头平稳。Keep the drill steady while it ascends and descends...打钻和提钻时要保持钻头平稳。The story ascends from a gothic tragedy to a miraculous fairy-tale.故事从一个哥特式悲剧升华为神奇的童话。...

v.上升，攀登( ascend的第三人称单数 )...

ascends的音标：...