Redruthite
[化] 辉铜矿
🗣️ 情景例句
That idea would never work in practice.
那种设想永远实现不了。
Who knows not how to dissemble knows not how to live.
掩饰感情全不会，怎样生活必不知。
With the invention of writing, a great advance was made, for knowledge could then be not only communicated but also stored.
随着书写的发明，又迈进了一大步，因为这样一来，知识不仅能交流，而且能储存了。