Combinatoric
a. 【数学】组合学的
🗣️ 情景例句
Will you forgive me?
能原谅我吗？
You must go to the moon. It's your duty.
你必须上月球去，这是你的职责。
because this is easier to shape than other kinds.
因为燧石较之其他石头更容易成形。