Lub
abbr. 逻辑元件块（logical unit block）；润滑（Lubricate）
🗣️ 情景例句
George Washington sat at that desk
George Washington曾坐在那
When an opportunity is neglected, it never comes back to you.
机不可失，时不再来。
Let's try the back door.
让我们到后门去试试。