上下移动

On some carousels, the horses move up and down as if they were galloping, so riders get a sense of what it is like to ride a real horse.

有些旋转木马的马好似在疾驶一般，会上下移动，所以骑乘者就可以略略知道真实的骑马感受。

Looking back on that now,on those long hours watching the glow of the wizard's fire slowly walk its way up and then down the pillar I amamazed at the emptiness of my early days.

现在回想起来，我竟然花费了那么多的时间去观看魔法火焰的热光缓慢地沿着即定的路线在石柱上下移动时，我惊讶于我早年的生活竟是如此的空虚。

In operation, the downhole devices will be laid down with tubings which will move up and down using the operation machine. Since the injection head can rotate in the determined speed, the rotating flow, compared with the conventional stable axial flow, can prevent the sands from depositing in the horizontal annular and washing the screen. The jet from high-efficiency jet nozzle will wash the screen directly with concentrated hydro-power. The working fluid can be clean water, without damage to the formation.

作业时用油管下入该井下装置，利用作业机带动油管上下移动，由于喷头可按照既定速度旋转，返回流体在水平段由常规的平稳轴向流动变为旋转流动，既可实现对防砂管的全方位解堵，又能避免砂粒沉积；高效喷嘴产生的射流直接对着防砂管冲击，能量集中；工作介质为清水，不会对地层带来二次污染。

In operation, the downhole devices will be laid down with tubings which will move up and down using the operation machine. Since the injection head can rotate in the determined speed, the rotating flow, compared with the conventional stable axial flow, can prevent the sands from depositing in the horizontal annular and washing the screen. The jet form high-efficiency jet nozzle will wash the screen directly with concentrated hydro-power. The working fluid can be clean water, without damage to the formation.

作业时用油管下入该井下装置，利用作业机带动油管上下移动，由于喷头可按照既定速度旋转，返回流体在水平段由常规的平稳轴向流动变为旋转流动，既可实现对防砂管的全方位解堵，又能避免砂粒沉积；高效喷嘴产生的射流直接对着防砂管冲击，能量集中；工作介质为清水，不会对地层带来二次污染。

In the redwoods, biologists are most interested in the dramatic temperature and humidity fronts

在红杉实验中，生物学家对于戏剧化的温度锋面与湿度锋面最感兴趣，这些锋面每天沿著树木上下移动，制造出有效的温度与湿度梯度，进而带动养份的流动。

It is featuring a pair of impressive oversized oculars with internal focusing, i.e. they neither move nor turn when focused. Fantao provides on his highly recommended Binofan web-page a detailed description of this sophisticated 7-lens eyepiece construction.

它的特征是令人印象深刻的过大的目镜，内部调焦，即调焦时不会转动和上下移动，Fantao在他的被高度推荐的 Binofan web-page 提供了这高级目镜的7镜片结构的详细描述（译者：连场镜也算成目镜了）。

The micro-motors of RC-260 and RC-280 made self vibration in electrical massage cushions and it s great quantity.

介绍了目前电动按摩椅中一般使用3~4台15~30W永磁直流电动机，用来传动按摩机芯的揉捏、敲击轴以及带动按摩机芯上下移动。

This isn't just an ordinary up-and-down elevator, by the way.

这不是只能上下移动的普通电梯

A forward or up-and-down movement of the head, usually expressive of drowsiness or agreement

点头：头的向前或上下移动的动作，通常为困倦或同意的表达

In motor vehicles a universal joint allows the driveshaft to move up and down as the vehicle passes over bumps.

在机动车辆里通用接口允许主动轴上下移动。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷