The reflected sound waves are then converted into a picture.

You have read that sound makes air vibrate, thus making sound waves.

你已经知道,声音使空气振动, 从而产生了声波.

Ultrasonic devices use sound waves of extremely high frequency.

超音波装置使用极高频率的声波.

We cannot see sound waves as they travel through air.

声波在空气中传播时,是看不见的.

The sound waves from the plane can speed on ahead of the plane.

来自飞机的声波能跑到飞机的前面.

Sound waves will reflect back from a solid surface.

音波将会从坚固的表面反射回去.

Soft loans and non-recourse finance packages are available in certain circumstances.

软贷款和无追索权财务包在特定情况下可用.

The men set off fireworks away evil spirits as wads of paper money smoldered the rubble.

男人们点燃鞭炮驱散邪灵,将纸钱揉在废墟中静静燃烧.

We expect you to turn in all homework assignments on time.

我们预期你会准时缴交所有家庭作业.

Much of their work is marked by a computer programme Computer-marked assignments.

他们的作业多数是由计算机程序来批改的,这被称为是“电脑批改作业”.

She was wrestling with assignments in mathematics.

她在苦苦对付数学作业.

That's why Robert Kincaid got assignments.

这是罗伯特.金凯得以委任的原因.

The five assignments from the class are presented here.

以下是本课程的五个作业.

There are three types of home assignments given a weekly basis.

每周有三种不同类型的家庭作业,一般是一周以后交作业.

Some journal assignments will be given out in class.

有一些笔记作业会在课堂上指定.

All assignments are due at times and dates indicated below.

所有的作业上交期限、期于以下说明.

Details of the assignments will be circulated in class.

论文的细节将在课堂上传达.

Many students put off doing their assignments until the last minute.

许多学生拖到最后一刻才在赶作业.

The police are worried about the increase in the number of stabbings in the city.

市内利器伤人案增多,警方甚感忧虑.

Chinese police respond to the stabbings at the Drum Tower in Beijing on Saturday.

中国警方对这起星期六发生在北京鼓楼的刺杀事件做出了反应.

Merchants can create, change, and maintain their Yahoo ! Storefronts through a Web browser.

厂家可以通过网页浏览器来创建 、 改变和维护他们的商店.