Petit's disease
[医] 腰三角疝
🧩 词语组成解析
🗣️ 情景例句
How long is this flight?
这趟飞行有多长时间？
Only fifteen minutes.
只要15分钟。
Everybody on board was worried and we were curious to find out what had happened.
飞机上的人都很着急，大家都急于想知道究竟出了什么事。