Context-free grammar
[计] 上下文无关文法
🧩 词语组成解析
free
[fri]
adj. 自由的;免费的;免税的;空闲的;
adv. 免费地;自由地，无拘束地;一帆风顺地;
vt. 免除;释放;使自由;解救;
🗣️ 情景例句
How much extra do I have to pay for that?
我还要另外付多少？
We are in great need of Grade A.
我们急需一等品。
Perhaps it is, sir.Tim's shirt's white.
也许是，先生。蒂姆的衬衫是白色的。