Validness
n. 正确；有效
🗣️ 情景例句
And the more you aply it in real situations.
你越多地将所学到的东西运用到实际生活中去。
Which one is more economical?
哪一个是比较经济的？
Good idea! When shall we meet?
好主意！我们什么时候会面？