Perfect competition
[经] 完全竞争
🧩 词语组成解析
🗣️ 情景例句
I want to buy an engagement ring for my fiancée.
我想为我的未婚妻买一枚订婚戒指。
Law makers should not be law breakers.
正人先正己。
Many of the stars cannot be seen because they are too far away.
许多星星我们之所以看不见，是因为它们离我们太远。