In addition to respirator use, the CDC and WHO advisories include information on other precautions that should be considered.
除使用口罩外，美国疾病控制预防中心和世界卫生组织的专家还提出了其他重要的预防措施。
In addition to respirator use, the CDC and WHO advisories include information on other precautions that should be considered.
除使用口罩外，美国疾病控制预防中心和世界卫生组织的专家还提出了其他重要的预防措施。
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