Dictionary自由百科

Google Arts & Culture features content from over 2000 leading museums and archives who have partnered with the Google Cultural Institute to bring the world's treasures online. 谷歌线上博物馆

绘画和绘画 – 加勒里克斯在线博物馆

抖音TikTok无水印下载Download Panda - DLPanda.com is one of the best free Download Tiktok(douyin) HD video/photo No Watermark tool online. You can download TikTok video without watermark from any device. TikTok downloader for pc, iPhone, Android.

wikiHow是一项协作项目，目标是建立世界最大的最高质量的指导手册。无论您想做什么，我们的多语种指导手册都可以为您提供免费的逐步指导。

The most popular dictionary and thesaurus for learners of English. Meanings and definitions of words with pronunciations and translations.

农业生产技术推广网站，专注于推广农业科技，普及农村养殖业、农业种植业知识与最新科技，推动与服务农村经济发展。

科学文库

中国数字科技馆是中国科协、教育部、中科院共建的一个基于互联网传播的国家级公益性科普服务平台

MBA百科

晓木虫，又称为晓木虫学术科研第一站。晓木虫的会员主要来自各大高校、科研院所的博硕士研究生、企业研发人员，晓木虫论坛良好的交流氛围及广阔的空间。

The largest and most trusted free online dictionary for learners of British and American English with definitions, pictures, example sentences, synonyms, antonyms, word origins, audio pronunciation, and more. Look up the meanings of words, abbreviations, phrases, and idioms in our free English Dictionary.

美国Nasa官网