A plane is seen on a training session over Douro River before the 2017 Red Bull Air Race in Porto, Portugal, Sept. 1, 2017. The race is to be held in Porto on Sept. 2 to 3. (Xinhua/Zhang Liyun)
2017 Red Bull Air Race to be held in Portugal
Source: Xinhua| 2017-09-02 19:35:03|Editor: ying
KEY WORDS: Air Race
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