It is well known that matter is in constant motion and constant change.

The market is a stream that is in constant motion.

市场像河流一样不断地波动.

Bodies at different temperatures are placed in contact.

使不同温度的物体相接触.

Sliding friction is independent of the area of surface in contact.

滑动摩擦力于表面接触的面积无关.

The two wires were in contact.

这两根电线接通了.

We do keep in contact.

我们确实保持着联系。

Stay in contact with the masses and mobilize the people.

必须联系群众,动员群众.

On a crowded train, one comes in contact with many people.

在拥挤的火车里面, 会和许多人接触.

I'll get in contact with a rental car company.

我将和出租汽车公司联系.

Yang remained in contact with ground control throughout the flight.

杨在整个飞行过程中始终与地面保持着联系.

Secondary school students in contact with our network, how to control yourself?

我们的中学生在接触网络时, 该如何把持自己 呢 ?

The disc with the film is put in contact with the tissue.

装着胶片的圆盘与拍摄的组织相接触.

" Please put me in contact with a pen-pal, badge or stamp collector. "

请将我列在 交笔 友, 收集徽章及邮票的名单之中.

They compared how these organisms behaved when left in contact with different materials.

他们比较了与不同材料接触时这些生物体的反应。

Not suited in contact with animal or vegetable oils, or solvents.

不宜与动、植物油或溶剂接触.

He brings bad luck to anybody he comes in contact with.

凡是跟他接触的人都会倒楣.

He has been in contact with decent, respectable, and even able and distinguished people.

他一直跟规矩的 、 正派的, 甚至有能力,有地位的人接触.

In contrast, the lives of girls in well-to-do families were often very sheltered.

相反，生活在富裕家庭的女孩子通常都备受呵护。

In contrast to this stands the individual soul.

与之相对的是个体灵魂.

In contrast to immunologic tolerance, immunodepression is nonspecific.

与免疫耐受相反, 免疫抑制是非特异性的.

The figure of Hurstwood was rather surprising in contrast to the fact.

赫斯渥的形象和这个事实相对照,确实令人吃惊.