A mine run by the Datong Coal Mining Group, a state-owned enterprise, is still operating within sight of the grottoes.

The Great Wall of China also recently introduced a designated graffiti zone.

最近，中国长城也专门开辟了一块指定的涂鸦区。

On that day they were escorted to the Great Wall of China.

他们那天和陪同人员一道去游览了中国的长城。

Most memorable was our visit to the Great Wall of China.

最难忘的是我们登上了中国长城。

I'm standing on the great wall of China and talking to you.

我站在中国的长城上给你打电话。

Connie: Have you ever seen the Great Wall of China?

康妮：你见过中国的长城吗？

Where have these people been? Have you ever seen the Great Wall of China?

这些人去过哪儿呢？你去看过中国的长城吗？

In a way, the Great Wall of China belongs to the world, too.

从某种意义上来说，中国的长城是属于全世界的。

Chinese Counterpart: The Great Wall of China

对应中国版：中国万里长城

The Great Wall of China is the only man-made structure visible from space

中国的长城是从太空中用肉眼能看见的唯一人工建筑

The Great Wall of China is the longest wall in the world.

中国的长城是世界上最大的城墙。

The Great Wall of China is one of the wonders of the world.

中国的万里长城是世界奇观之一。

The Great Wall of China.

中国的长城。

To visit the Great Wall of China is her dream.

参观中国的长城是她的梦想。

I know the Great Wall of China.

我知道中国的万里长城。

We need a taxi to the great wall of china.

我们得叫一辆出租车去长城。

The Great Wall of China was built by the Han Chinese

长城始建于中国汉代

Have you ever seen the Great Wall of China?

你见过中国的长城吗？

We want to walk along the great wall of china.

我们想沿中国的长城行走。

Internationally, research effort has been focused on biological nitrogen fixation in legume/ graminaceae system due to environmental problems and energy crisis causing by irrational fertilizer N use.

近年来，在不合理施用氮肥所带来的环境问题和过度依赖石化能源所产生的能源危机双重压力下，国际上对豆科在间作农业和混作牧草中的固氮作用研究十分重视。

An Outlook of the Complementary Nitrogen Nutrition in the Legume// Graminaceae System

豆科//禾本科间作系统中氮营养研究进展