Dr Read started from the observation that it is old, rather than young, mosquitoes that are infectious.
里德教授观察发现，具有传染性的是老蚊子而不是幼虫。
This is an article written by Mr. Dajun Zhong, Director of the Beijing Da jun Economic Observation Research Centre, after he read the "2001 Annual Report of the Listed Companies".
这是北京大军经济观察研究中心主任仲大军先生看了《2001年上市公司年报报告》后有感而发撰写的一篇文章。
This is an article written by Mr. Dajun Zhong, Director of the Beijing Da jun Economic Observation Research Centre, after he read the "2001 Annual Report of the Listed Companies".
这是北京大军经济观察研究中心主任仲大军先生看了《2001年上市公司年报报告》后有感而发撰写的一篇文章。
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