根据中国儿童中心的数据，9%的中国儿童拥有自己的手机。
9 percent of Chinese children have their own mobile phones, according to China National Children's Center.
根据国家卫生健康委员会的数据，2018年，16%的中国儿童超重。
In 2018, 16 percent of Chinese children were overweight, according to the National Health Commission(NHC).
根据世界银行的数据，中国拥有全世界繁忙的客运铁路。
China has the busiest railways in the world, according to the world Bank.
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