To give or be protection against something unpleasant means to prevent people or things from being harmed or damaged by it.
近义词
care
双语例句
例：
Such a diet is widely believed to offer protection against a number of cancers.
人们普遍认为这样的日常饮食可以预防多种癌症。
例：
It is clear that the primary duty of parents is to provide protection for our children.
很明显，父母的首要职责就是为孩子提供保护。
2.?[U 不可数名词] （保险单提供的）保险
If an insurance policy gives you protection against an event such as death, injury, fire, or theft, the insurance company will give you or your family money if that event happens.
双语例句
例：
Insurance can be purchased to provide protection against such risks.
可以购买保险以应对此类风险。
3.?[U 不可数名词] 贸易保护
If a government has a policy of protection, it helps its own industries by putting a tax on imported goods or by restricting imports in some other way.
双语例句
例：
Over the same period trade protection has increased in the rich countries.