Stricturoscope
直肠狭窄镜
🗣️ 情景例句
Susan has told me a great deal about you.
Susan告诉我许多关于你的事。
One hour today is worth two tomorrow.
今天的一个小时抵得上明天的两个小时。
Opportunity knocks but once.
机不可失，时不再来。