防护 (fáng hù): to defend; to protect

Everyone on the construction site must wear a safety helmet and take protective measures.

When going out, remember to apply sunscreen to protect your skin from sunburn.

This virus is highly contagious, so medical staff need to wear full protective suits.

The government strengthened border defenses to prevent the epidemic from spreading further.

Network protection is very important; don't click on unfamiliar links carelessly.