Otosteon
[医] 耳石, 听小骨
🗣️ 情景例句
Don't cross that bridge till you come to it.
没到河边，先别操心怎么过桥。
Never put off till tomorrow what may be done today.
今日事，今日毕。
These were the so-called mainframe machines.
它们被称为主机。