Adamantine
a. 非常坚硬的, 坚定不移的\\nn. 金刚硼
🗣️ 情景例句
He's unwilling to accept advice.
他不愿接受劝告。
Sometimes it's nice just to sit around and do nothing.
偶尔坐着无所事事，也算是赏心乐事。
His parents did not know what was wrong.
他的父母亲不知道他有什么毛病。