Planometry
n. 平面规；测平器 (planometer的变形)
🗣️ 情景例句
This is really neat!
太好了
You're wasting you breath.
你在白费口舌。
They may also have used wood and skins, but these have rotted away.
他们也可能用过木头和兽皮，但这类东西早已腐烂殆尽。