a rule that prevents people of certain age from doing specific activities or having access to certain services
![年龄限制, 年龄要求](https://api.langeek.co/v1/assets/flags/zh.png)
年龄限制, 年龄要求
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a person or thing that does not follow a general rule or is excluded from a class or group
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例外, 特例
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a principle or instruction based on which a person should behave or act in a particular situation
![指导方针, 准则](https://api.langeek.co/v1/assets/flags/zh.png)
指导方针, 准则
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a rule made by the government, an authority, etc. to control or govern something within a particular area
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规定, 条例
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an action that one must perform because they are legally or morally forced to do so
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义务, 责任
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a set of rules and regulations that must be followed in a particular organization, occupation, etc.
![规则手册, 章程](https://api.langeek.co/v1/assets/flags/zh.png)
规则手册, 章程
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the quality or characteristic of being uncompromising in enforcing rules, regulations, or standards
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严格性, 严厉性
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an order officially put to limit contact or trade with a particular country that has not obeyed international law
![经济制裁, 禁运](https://api.langeek.co/v1/assets/flags/zh.png)
经济制裁, 禁运
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used for stating conditions necessary for something to happen or be available
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前提是, 只要
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