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Scroll bars are positioned either vertically (for up and down movement) or horizontally (for left and right movement). 滚动条可以垂直地（用于上和下移动）或水平地（用于左和右移动）放置。
The old man stared the uninvited guest up and down. 老人把不速之客上下打量了一番。
A kinematic test bench for Macpherson suspension was designed and the up and down movement of wheels was simulated by loading the wheels by mechanical jacks. 选用某轿车的前悬架(麦弗逊悬架),设计了悬架运动学参数试验台,采用机械式千斤顶加载的方式来模拟车轮的跳动。
In process of spinning,The winding formation depends directly on the up and down movement of ring bar,especially the repeated bumping and beating of nose bit and nose base on the formation cam. 在纺纱过程中,钢领板的上下运动直接影响到卷绕成形的质量,特别是成形凸轮在桃尖的冲击及桃底的打顿,更突出地影响到成形的好坏。
In process of spinning, The winding formation depends directly on the up and down movement of ring bar, especially the repeated bumping and beating of nose bit and nose base on the formation cam. 摘要在纺纱过程中，钢领板的上下运动直接影响到卷绕成形的质量，特别是成形凸轮在桃尖的冲击及桃底的打顿，更突出地影响到成形的好坏。
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。
The main blades pitch angle is controlled by the up and down movements of the swashplate. 大桨的螺距角度是由倾斜盘的上升和下降动作控制的。
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。
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。
Up and down movement control of the hydraulic press slide 液压机滑块的升降控制
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。
The teacher was walking up and down in the classroom. 老师在教室里走来走去。