I'd like to express my (感谢) for your help.
The (人口)of China may increase fast because of the second﹣child policy(政策).
Tu Youyou won China's first Nobel Prize in Medicine in (十月),2015.
大自然如此重要以至于我们都在合理保护它.
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你能猜猜我叔叔买这个机器人多久了?
每天大量的申请信被及时处理.