Petit's triangle
[医] 波替氏三角, 腰三角
🧩 词语组成解析
🗣️ 情景例句
Two is enough.
两块足够了。
You cannot break the contract without any good reason.
如果没有什么正当理由，你们不应撕毁合同。
At night, the children always do their homework.Then they go to bed.
晚上，孩子们总是做作业，然后去睡觉。