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
with the school-board committee.
与联合校董会有关。
Would you answer the phone please?
你能接下电话吗？
They disregard social conventions without being conscious that they are doing anything extraordinary.
他们不顾社会习俗，意识不到自己所作所为有什么特殊之处。