This is the 838th most frequent Chinese word.
防护
Protection; defense; safeguard.
防护 is used to indicate the protective capability of the mask against external harm.
这副口罩可以提供良好的防护。
This mask can provide good protection.
防护 is used here to refer to safety measures that prevent accidents or hazards.
施工现场的安全防护措施非常重要。
Safety protective measures at construction sites are very important.
防护 is describing the technologies aimed at ensuring protection from potential risks or harm.