Sigmoidoscope
n. 乙状结肠镜\\n[医] 乙状结肠镜
🗣️ 情景例句
we would go down to the beach and catch crabs,
我们走到海边抓螃蟹，
First come, first served.
先来先卖。
When did you come to China?
你什么时候来到中国？