“这是由国际安全和免疫原性因素标准决定的，”赵凯在周一举行的专家认证会议上说。
"It's up to the international standard for safety and immunogenicity factors," Zhao said Monday at the experts certification meeting.
“这是由国际安全和免疫原性因素标准决定的，”赵凯在周一举行的专家认证会议上说。
"It's up to the international standard for safety and immunogenicity factors," Zhao said Monday at the experts certification meeting.
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