Perfect competition
[经] 完全竞争
🧩 词语组成解析
🗣️ 情景例句
John proposed marriage to Helen.
绚翰向沦论求婚。
I'm reading a book.
我正在读一本书。
On the day before our departure, several bus loads of tourists descended on the town.
我们离开小镇的前一天，镇上来了几辆满载游客的公共汽车。