Protopyramid
原棱锥, 初级棱锥体
🗣️ 情景例句
I should have saved some money.
我早该存些钱。
Don't bother me with stupid questions.
不要问一些愚蠢的问题来烦我。
But the historian attempting to reconstruct the distant past is always faced with a difficult task.
但是，历史学家企图重现遥远的过去可是一项艰巨的任务，