They are going to guard the pass.

The piston is reciprocating inside cylinder.

活塞在汽缸内部往复运动.

The ball is doing a reciprocating movement.

那个球在做往复移动.

Now to an example to illustrate the reciprocating piston pump works.

现以活塞式为例来说明往复泵工作原理.

In the circle, in a hoop that never ends.

造物的链条往复循环, 生生不息.

Special sliding setting , stable running stroke , accurate stripping & cutting.

独特式 滑座, 往复行程平稳,切剥精准.

To and fro in his breast his thoughts were heaving and dashing.

胸中往复的是他的思绪起伏冲撞.

The hotel is within easy reach of the beach.

这家旅馆离海滨很近.

Why to say telecommunication is the multiplier of productivity?

为何说电信是生产力的倍增器?

Electronmultiplier cells are superior to ordinary photocells.

电子倍增管比普通的光电管好.

This means that they progressively double.

这就意味着它是以累进方式倍增.

If we are granted the sole agency, we can assure you that we'll double the turnover.

假如我们得到独家代理权, 我们保证销售量可翻一番.

Scientists have calculated that the world's population will double by the end of the century.

科学家们估算,在本世纪末世界人口将翻一番.

But he estimates that the percentage of users with application servers will nearly double this year.

但他估计,今年使用应用服务器的用户的百分比将近翻一番.

Strive to two double: striving in 2010 GDP and fiscal revenues in 2005 doubled again.

力争两个翻番: 力争2010年地区生产总值和财政收入比2005年再翻一番.

The world population is doubling every 35 years.

世界人口每隔35年翻一番.

The world population is doubling every thirty-five years .

世界人口的数量每隔 三十五年 就翻一番.

We shall double the output of our industry this year.

今年我们将使工业产量翻一番.

Over the next 20 years, the world economy will double its size.

在今后20年内, 世界经济的规模将翻一番.

It is expected to even double that figure in the future.

这项盈利记录有望在不久的将来翻一番.

DJ Mbenga won't get blocked trying to enter the arena.

姆本加再也不用在进场时被拦在球馆外了.