We are visiting China at the invitation of the China Travel Service.

我们是受中国旅行社邀请来访华的。

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In Beijing, we went to the China Travel Service office to make inquiries.

到了北京，我们去中国旅行社办事处打听。

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Tourists can join a "Magical tour to Avatar-Pandora" or a "Miracle tour to Avatar's floating mountain," the Zhangjiajie branch of the China International Travel Service Corp said on its Website.

中国国际旅行社网站上张家界分社的网页里已经有“潘多拉星球迷幻之旅”和“阿凡达悬浮山脉之旅”的内容。

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"So far, so good", said one official at the state-run China International Travel Service in Beijing, when asked about booking cancellations because of the crash.

BBC: Crash prompts World Cup fears