Last week we shared some of your comments on this issue. Now, we talk to a researcher who presented a study this week at the Pediatric Academic Societies meeting in Vancouver, Canada.
上个星期我们也陆陆续续地收到很多网友给我们的留言，现在我们就有关问题访问一下本周在加拿大的儿科学术社团发表相关演说的研究员，看看他们的想法。
Last week we shared some of your comments on this issue. Now, we talk to a researcher who presented a study this week at the Pediatric Academic Societies meeting in Vancouver, Canada.
上个星期我们也陆陆续续地收到很多网友给我们的留言，现在我们就有关问题访问一下本周在加拿大的儿科学术社团发表相关演说的研究员，看看他们的想法。
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