Validness
n. 正确；有效
🗣️ 情景例句
We'll take you to him.
我们会送你去他那儿。
How much is it?
这卖多少钱？
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。