STEM与日常科技·英语30篇（1）
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APIs: The Plugs That Let Programs Talk to Each Other
API：程序间沟通的‘插座’
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An API is a set of rules that lets different software applications exchange data and functions.
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Think of it like an electrical socket: one side supplies power, the other receives it safely.
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When a weather app shows your local forecast, it likely uses a weather service’s API.
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APIs define what requests a program can make and what responses it will get back.
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Most web APIs send data in JSON format, which is lightweight and easy for machines to parse.
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Developers use API keys to authenticate access and prevent unauthorized use.
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Public APIs let third-party apps extend services, while private ones protect internal systems.
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Poorly designed APIs can cause crashes, slow performance, or security leaks.
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Versioning helps update APIs without breaking older programs that depend on them.
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Just as sockets standardize electricity, APIs standardize digital communication.