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
Mitchell, so nice of you to come.
Mitchell，欢迎光临。
Brevity is the soul of wit.
言以简洁为贵。
She herself read them to me by spelling into my hand what was written in the book.
她亲自通过在我手上拼写书中的内容，把课本对我读出来。