Obdurability
n. 坚固
🗣️ 情景例句
Please keep two for us to pick up.
请给我保留两张。
Good-bye, Mike.
再见，迈克。
I have just received a letter from my old school, informing me that my former headmaster,
我刚刚收到母校的一封信，通知我说以前的校长