• 发表儿科杂志2009年美国父母调查报告显示绝大多数的父母都相信疫苗能够保护他们的孩子免受疾病的困扰,但是也有超过的父母会考虑疫苗带来的副作用。

    A 2009 survey of U.S. parents published in the journal Pediatrics showed that while most agreed that vaccines protect their children from diseases, more than half were concerned about adverse effects.

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  • FO被台航迹239下降600,开始程序转弯报告

    Track out 239 from fo for one and a half minutes, descend to 600m, report when staring procedure turn.

    youdao

  • FO被台航迹239下降600,开始程序转弯报告

    Track out 239 from fo for one and a half minutes, descend to 600m, report when staring procedure turn.

    youdao

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