1. 保护；防护
    To give or be protection against something unpleasant means to prevent people or things from being harmed or damaged by it.

    e.g. Such a diet is widely believed to offer protection against a number of cancers...
           这种饮食结构被广泛认为可以预防多种癌症。
    e.g. It is clear that the primary duty of parents is to provide protection for our children...
           很明显，父母的首要职责是为孩子们提供保护。

2. （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.

    e.g. The new policy is believed to be the first scheme to offer protection against an illness.
           这份新的保险单被认为是首个承保疾病风险的保险方案。

3. 保护法；保护条例；保护措施
    Protections are laws and other official measures intended to protect people's rights and freedoms.

    e.g. ...civil rights bills providing a myriad of protections for gays, women and the disabled.
           为同性恋者、妇女和残疾人提供了诸多保护的民权法案

4. 贸易保护；关税保护
    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.

    e.g. Over the same period trade protection has increased in the rich countries.
           在同一时期，富国的贸易保护有所抬头。

5. （歹徒索取保护费后提供的）保护
    If criminals offer people protection, they demand money from them and in return promise not to hurt them or damage their property.

    e.g. A businessman who refused to pay protection money was shot nine times.
           一位拒交保护费的商人被打了9枪。
    e.g. ...protection rackets.
           勒索保护费