外语 · 学习

可视化英语单词词典

italki is the best language learning community. Here you can learn over 150 languages like English, Spanish, French, Chinese, etc. with professional online tutors.

英语句子用例搜索引擎

Grammarly’s free writing app will make sure your messages, documents, and social media posts are clear, mistake-free, and impactful.

Cambly gives you instant access to native English speakers over video chat, so you can learn and gain confidence!

知识无疆界

超2亿人都在用的英语学习大杀器！致力于为你解决背单词难题，独创图背单词学习法，趣味学英语；内涵海量词库，覆盖全年龄段词汇需求；配备单词全解，发音例句辅助学习。

Duolingo is the world's most popular way to learn a language. It's 100% free, fun and science-based. Practice online on duolingo.com or on the apps!

日本广播协会出品的免费日语学习课程

Linggle 多元英語學習平台