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Unwind collocate electro motion rise and down product function. 放卷配置了电动升降料的功能。
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。
The data of the subject A showed that the post-exercise recovery period was occurred between 180 second and 200 second.A rapid rise and down of HR was occurred between 215 sec and 240 sec. 由受测者A的数据可以看出，在第180秒到200秒左右心率都保持正常快速恢复期，接著出现一个快速的心率上升下降（约在215秒到240秒间）。
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。
I am reading a book about the rise and fall of the Roman Empire. 我正在看一本关于罗马帝国兴衰的书。
The ladder of kites rises and descends, turning a generator on the ground as it yo-yos up and down. 阶梯排列的风筝起起落落，像溜溜球般上上下下启动地面上的发电机。
The rise and fall of the temperature is caused by the wind. 气温的上升和下降是刮风引起的。
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。
The sun appears to rise and set because of the earth's rotation. 因为地球在自转,看上去就有了日出和日落。
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。
The price of coffee has been rising and falling, but has now stabilized. 咖啡的价格一直时涨时跌，但现在已稳定了。
House prices keep rising and falling but they will eventually even out. 房价有涨有落，但终会稳定的。
The birds rose and dipped in flight. 鸟儿在飞行中时高时低。