Formal development
[计] 形式推导
🧩 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
What does that mean when he goes,
他发出的声音代表什么意思
A man who has friend must show himself friendly.
与朋友交，必须友好相处。
My father was shocked.Now we are not allowed to touch it.
我父亲大为吃惊，不许我们再动它。