Studies suggest that seasonal influenza vaccines could sometimes be associated with an increased risk of Guillain-Barré syndrome on the order of one to two cases per million vaccinated persons.

研究提示季节流感疫苗有时伴有Guillain-Barré综合症大约每百万接种者1-2例，有增加的危险。

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In fact, outsourcing can control the cost, but in order to make the ideal service performance, sometimes cost may be increased on the original basis.

事实上，外包虽然可以控制成本，但为了取得理想的服务绩效，有时候也可能在原有的基础上增加成本。

youdao

In fact, outsourcing can control the cost, but in order to make the ideal service performance, sometimes cost may be increased on the original basis.

事实上，外包虽然可以控制成本，但为了取得理想的服务绩效，有时候也可能在原有的基础上增加成本。

youdao