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在任何网页划词，AI 结合上下文给出中文解释，一键存入欧陆词典并附带语境笔记。 Context Vocab 解决两个英语学习者的真实痛点： 1. 字典查词脱离语境。对着 "L.I.E." 这种缩写、"constellation" 这种多义词，字典给十几条释义让你自己挑——而你看的那篇文章里它就是一个意思。 2. 复习时忘了"当时为啥要存这个词"。生词本里孤零零躺着 ramification、bullish，过两周完全记不起来从哪儿来的。 —— 怎么用 —— • 在任何网页选中一个英文词或词组（≤ 60 字符），浮出 ✦ 查词 按钮 • 点一下，弹出面板： - 主释义：字典式精炼解释（10-30 字） - 此处含义：结合上下文为什么是这个意思（2-3 句） - 词性 + 备注：词源 / 易混词 / 地道用法 • 面板底部：朗文 / 韦氏 / 剑桥三个直跳链接 • 点"存到欧陆"：单词进入生词本，AI 解释 + 原文段落作为笔记同步附在词条上，手机端打开就能看到 —— 适合谁 —— • 用欧陆词典的英语学习者：让每个生词都带着原句一起进生词本 • 在外刊上读 WSJ / NYT / The Economist 的同学：上下文相关词汇本来就是字典查不准的 • Anki 用户：插件提供专门的 .txt（TSV）导出，带 HTML 格式的释义和原文，导入即用 —— 关于成本 —— 调用 DeepSeek 的 deepseek-v4-flash 模型（DeepSeek 最便宜的模型）。每次查词约 ¥0.0007，一个月几十次的强度成本不到一块钱，比欧陆 AI 会员便宜两个数量级。 API key 完全保存在你本地浏览器（chrome.storage.local），不上传任何服务器，插件本身没有后端。 —— 隐私 —— 我们不开服务器，不收集任何数据，不发送遥测。你的查词请求只去 DeepSeek，存的词只去欧陆 OpenAPI。详见隐私政策。 源码开放：https://github.com/kevinguo0351/context-vocab-extension Context Vocab solves two real frustrations for English learners: 1. Dictionary lookups lose context. For abbreviations like "L.I.E." or polysemous words like "constellation," dictionaries dump a dozen entries on you — but in the article you're reading, it means exactly one thing. 2. Review time means forgetting why you saved a word. Your wordlist sits there with "ramification" and "bullish" and two weeks later you can't remember what article they came from. —— How it works —— • Select an English word or phrase (≤ 60 chars) on any page. A floating "✦ Look up" button appears. • Click it. The panel shows: - Definition: a tight one-line dictionary-style gloss (in Chinese) - In-context meaning: why it means this here, referencing the passage (2-3 sentences) - Part of speech + memory tip • Bottom of the panel: direct links to Longman, Merriam-Webster, and Cambridge. • Click "Save to Eudic": the word enters your study list AND the AI explanation + original passage are attached as a note to the same entry — visible in the Eudic mobile app. —— Who it's for —— • Eudic users who want every saved word to carry its original sentence • Readers of WSJ / NYT / The Economist where contextual nuance matters • Anki users — there's a dedicated .txt (TSV) export with HTML-formatted back side, ready to import —— About cost —— Uses DeepSeek's deepseek-v4-flash model (their cheapest tier). Each lookup is ~$0.0001 USD; even hundreds of lookups a month cost less than a cup of coffee. Your API keys live entirely in chrome.storage.local. The extension has no backend. —— Privacy —— No server. No telemetry. No data collection. Your lookup requests go only to DeepSeek; saved words go only to the Eudic OpenAPI. See privacy policy for details. Open source: https://github.com/kevinguo0351/context-vocab-extension