您要查找的是不是：
- The kanga jaw uses a linear motor which adds an up and down motion to its rotating jaws. 下颚的坎加采用直线电机增加了一个向上和向下运动的旋转颌骨。
- After an up and down pre-season the league opener is upon us. 在联盟开罐器是在我们之上的一个上下前季节之后。
- In a later Boulton and Watt engine, dating from 1788, the up and down motion of the beam was converted into a rotary motion. 1788年，瓦特和波尔顿将上下移动的吊杆改装成旋转式的。
- Fletcher endured an up and down season with injuries and the burden of carrying a midfield missing its former talisman Roy Keane. 弗莱彻忍耐了一个赛季的伤病并要承担老队长基恩在中场的重担。
- Rasheed Wallace has had an up and down preseason with his best effort coming against the Knicks. 拉希德华莱士在季前赛里表现起伏很大，他在对阵尼克斯那场表现的最好。
- The old man stared the uninvited guest up and down. 老人把不速之客上下打量了一番。
- He was walking up and down the station platform. 他在火车站的月台上走来走去。
- They were jigging up and down to the music. 他们随着音乐的节拍轻快地上下跳着。
- He leapt up and down in sheer outrage. 他气得暴跳如雷。
- Alice jumped up and down in an agony of terror. 阿丽思跳上跳下吓得要命。
- He got up, and began to pace up and down the room. 他起身并开始在房间里踱来踱去。
- We have looked for it up and down. 我们到处都找过了。
- She paraded up and down in her new hat. 她戴著新帽子在人前走来走去。
- The boy stared up and down at his reviler. 男孩子上下打量这个谩骂他的人。
- A little bird was bobbing its head up and down. 一只小鸟把头上下快速摆动著。
- He pumped my hand (up and down) vigorously. 他握住我的手用力地(上下)摇晃。
- We bumped up and down along the gravel path. 我们沿砾石小路颠簸而行。
- We've spent all day humping furniture up and down stairs. 我们花了一整天的时间楼上楼下地搬运家具。
- The old truck jogged us up and down for an hour before we arrived. 在那辆旧卡车将我们上下颠簸了一小时以后，我们终于到达了目的地。
- A butterfly is flying up and down among the flowers. 有一只蝴蝶正在花丛里忽上忽下地飞着。
