The Potala Palace, the Jokhang Monastery and some other monasteries and temples have become national or regional key cultural preservation centers.

布达拉宫、大昭寺等一批寺庙列为全国或自治区重点文物保护单位。

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Key cultural relics have Ruicheng Yongle Palace, its architecture is not only unique, but the Yuan Dynasty has a huge beautiful murals, the artistic charm of its superb world known.

重要文物古迹有芮城永乐宫，它不但建筑别致，而且有着精美的元代巨幅壁画，以其精湛的艺术魅力著称于世。

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Search engine becomes the key to open the knowledge palace and the tool to get the knowledge.

搜索引擎是开启网络知识殿堂的钥匙，获取知识信息的工具。

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The troops are technically mandated with the protection of key sites in the capital, including the presidential palace, airstrip,and seaport.

VOA: standard.2009.09.16

Unlike the subjects of most other Madame Tussauds waxworks, the company said William and Kate did not "sit" for their figures, but St James's Palace provided all the key measurements, and the finished pieces have been given the royal seal of approval.

CNN: Kate and William waxworks unveiled

The Met, Britain's biggest force, has 2, 600 firearms-trained officers that are mainly used to protect key buildings, such as Parliament, Buckingham Palace and foreign embassies.

BBC: The Met has 2,600 firearms-trained officers