上下

According to what we know of cloud movement, it often involves moving vertically, up and down.

我们所知的云动，经常有上下的垂直移动。

We use Poly vinyl alcohol, acrylic acid and acrylonitrile as the materials, through the aldolisation of PVA and copolymerization of AA and AN, we prepared the composite membrane with balance theory of hydrophilic and hydrophobic water.

本文以聚乙烯醇和丙烯酸、丙烯腈为主要原料，通过PVA缩醛中醛的选择及膜制备方法的选择，根据亲憎水平衡理论设计出PVA缩甲醛膜上下两层包覆AA和AN共聚膜的复合膜，用此膜进行甲醇／水溶液的渗透汽化分离。

At this time, we do not have plans to reprint this title. replied by Penguin Group ……the Virtu弄得我想看完Melusine也不敢看-w-Kammy , Jun 9, 2009

如果你不介意的话，我可以send电子档给你，Melusine跟Virtu根本就是同一本书的上下本，没可能分开看的啊。。。

Driver's visor was provided with an upper and lower sliding shutter, which could be closed together.

驾驶员的观察口是一个可以上下滑动的闸板，必要的时候可以封闭起来。

Then, we offer two applications to nonlinear Volterra type integral equations and the initial value problems for ordinary differential equations in Banach spaces.

在第二节中，通过建立新的比拄定理，在反向上下解条件下，椰了BaDach 空间中下列一阶非混合型徽分－积分方程周用边位问题仔BVP） I y＝＝歹u.X。

The young wage-earner often earns good money, and soon acquires a feeling of economic independence.

这一句小家伙感觉处理不好，一片浮萍的一样在江河上漂着，没有左邻右舍，没有上下茎叶，如果是湖水也罢了，宁静和谐，但偏偏是江河，有些败笔。

It was a case of the tail wagging the dog .

这是上下颠倒的一个实例。

This is a case of the tail wagging the dog—the secretary is telling the boss what to do.

这是上下颠倒的现象—秘书在告诉老板该干些什么。

There is also an early caricature of Hitler as Siegfried, the Wagnerian hero, heralding the next appalling era in German history.

他还画了一幅漫画讽刺希特勒为瓦格纳笔下主人公——齐格弗里德，这幅漫画也预视了德国历史上下一个令人震惊的时代。

"When you can walk up and down stairs, it makes a huge difference in patient quality of life," he said.

"当你能够步行上下楼梯，它产生了巨大的差异，病人的生活质量，"他说。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。