شبکه واژگان: 口罩
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لغات مرتبط (4)
卫生
The practice of maintaining cleanliness to prevent disease and promote good health. It can refer to personal cleanliness or public health systems.
B1病毒
virus
A2预防
To stop something from happening before it occurs, especially something unpleasant or harmful like a disease or accident.
B1防护
Protection; safeguard.
B1
