Formal theory
[计] 形式理论
🧩 词语组成解析
formal
['fɔ:məl]
adj. （学校教育或培训）正规的;方式上的;礼仪上的;
n. <美>须穿礼服的社交集会;<口>夜礼服;
🗣️ 情景例句
I have lots of hobbies. I love to stay busy.
我有很多爱好，我喜欢让自己忙着。
I would rather stay here.
我宁愿留在这里。
Oh, look! said Ann. What's that? She pointed at one of the things.
“看啊！”安说，“那是什么？”她指着一件展品问。