Protective means designed or intended to protect something or someone from harm.
Protective gloves reduce the absorption of chemicals through the skin.
防护手套可以减少皮肤对化学物质的吸收。
Protective measures are necessary if the city's monuments are to be preserved.
必须采取保护性措施保护这个城市的历史遗迹。
If someone is protective toward you, they look after you and show a strong desire to keep you safe.
He is very protective towards his mother.
他对母亲爱护备至。