Petroglyphs
(petroglyph 的复数) n. 岩石雕刻, 岩画
🗣️ 情景例句
Our boss doesn't give us any slack
我们老板不让我们有一丝松懈。
If we are bound to forgive an enemy we are not bound to trust him.
如果我们决定宽恕一个敌人，但决不能相信他。
What happened before printing was invented?
印刷术发明以前是怎么一回事？