Culdoscopy
后陷凹镜检查，后穹窿镜检查
🗣️ 情景例句
Our toy company makes the most wonderful toys for kids.
我们玩具公司为小孩子们制造最棒的玩具。
Paul started with surprise when Jim tapped his shoulder.
当吉姆拍了保罗的肩膀时，保罗吓了一跳。
I'm sorry, but this week isn't very convenient for me.
对不起，这个星期我都不方便。