The two pandas, named Xing Ya and Wu Wen, are both more than 3 years old and will stay in the country for scientific research for 15 years, according to Xinhua.

据新华社报道，这两只大熊猫名为“星雅”和“武雯”，都已超过3岁，并将留在该国进行15年的科学研究。

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Two pandas were born in zoos in China this year.

今年，中国动物园迎来了两只熊猫宝宝的降生。

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Souvenirs and memorabilia for marking the departure of the two pandas are displayed at Dulles International Airport in Chantilly, va.

为两只熊猫的离去而准备的纪念品被摆放在位于尚蒂伊的杜勒斯国际机场。

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China said in May 2005 it would give the island two giant pandas, but their departure was delayed for more than three years.

CNN: China sends goodwill pandas to Taiwan

Two different red pandas escaped in 1999 and 2002.

BBC: Coati missing from Belfast Zoo thought still alive

Any cubs would remain in Edinburgh for two years before the pandas are returned to the Chinese.

BBC: Edinburgh Zoo pandas: Enclosure swap ahead of mating