After switching on powerful arc lights, they saw great stalagmites&.

Production of Compound Imitation Agates

复合仿玛瑙制品的生产

It's bigger than some breadboxes.

它比一般的面包盒子大。

'It's' ( with an apostrophe) should be used only as a contraction for 'it is'.

it's（带撇号）只能用作it is的缩约形式。

There should be an apostrophe here, and look, you've missed out the word 'men' altogether!

这里应该有一个撇号，还有你看，你把men这个单词整个儿漏掉了！

Proper use of apostrophes is not the same as decent writing, but at least it eliminates the worst offences.

正确使用撇号与像样的写作不是一回事，但它至少能消除那些最糟糕的错误。

The only complication comes from names that themselves contain one or more apostrophes.

人名中惟一的复杂情况是人名本身可能包含一个或多个撇号。

Military briefers say no planes were shot down today.

负责军情通报的官员们声称今天没有飞机被击落。

Ingredients: Artemisias, Artemisia, Citronella, Wintergreen, Tea Tress, Verbena, Sea Salt, Olive Oil, Coconut Oil.

成分：抹草、艾草、香茅、愈创木、茶树、冬青、马鞭草、橄榄油、葵花油、椰子油。

When the tunnels are passing through accretions, large collapse will be caused during clearing. therefore, advance injecting shall be employed to reinforce surrounding accretions.

当隧道穿越堆积物时，清理时会造成随清随塌的大型塌体，应采用超前预注浆加固周围的堆积物。

nutritional deficiencies caused by vast acreages of single-crop fields that lack diverse flowering plants;

由于大面积种植同一种作物而缺乏多种开花植物所造成的营养不足；

The extension area was more than 300 million acreages with the industrialization of various models by promotion network.

利用推广网络，借助各种产业化模式，使推广面积达300万亩以上。

The utility model is mainly used in the railway locomotives air brakes to transport compressed air and transfer the brake operation signal.

本实用新型主要用于铁道机车车辆空气制动机输送压缩空气和传递制动操作信号。

A preliminary study of automatic brake action for JZ-7 air brakes

JZ-7型空气制动机自动制动作用初探

Preparation and Performance of Self-healing Oxidation Protection Coating for Air Brakes

航空刹车用自愈合抗氧化涂层的制备及性能

Electrical systems are now being used to power reverse-thrusters – air brakes, essentially-in air craft like the A380 – and for de-ic in g wings.

电子系统现在应用于A380这样的飞机中的逆功率推进器，主要是气闸，以及为机翼除冰。

In the yard outside, his budgerigars rattle at their rusty cages.

庭院里，他的虎皮鹦鹉在锈迹斑斑的笼中嘎嘎哀鸣。

Other social creatures like guinea pigs and budgerigars are also covered by this legislation.

其他社会性生物，比如豚鼠和虎皮鹦鹉，也在法规保护范围内。

I was writing a book about African-Americans.

我在写一本关于非裔美国人的书。

Farrakhan was a poor standard-bearer for the causes of African-Americans.

法拉坎算不上是美国黑人运动的一位模范领袖。

Today African-Americans are 12 percent of the population.

如今非裔美国人占总人口的12%。