Sphincteroscope
[医] 肛门括约肌镜
🗣️ 情景例句
I've been working too hard. I'm beat.
我工作的太多，我快垮了。
All produets have to go through five checks in the whole process.
所有产品在整个生产过程中得通过五道质量检查关。
The relay race
接力赛