Thucolite
古碳质岩
🗣️ 情景例句
No pain, no gain.
只有付出，才有收获！（不劳则无获！）
You can receive our program at short wave 37.5 MH.
你可在短波37.5赫兹上收到我们的节目。
After they carved the characters on rocks, they put a piece of wet paper on top of the characters and beat it lightly.
他们把字刻在石块上后，再把一张潮湿的纸放在字的上面，并轻轻地拍打。