Triadaxis
三次对称轴
🗣️ 情景例句
Please do the work at your own convenience.
请在方便时把这事做一做。
What can it be?
它是什么呢？
He had lived in it as a child when it was already disappearing,
作为一个孩子他曾在西部生活过，当时西部拓荒生活正在消失。