Mathematical object
[计] 数学对象
🧩 词语组成解析
🗣️ 情景例句
What was it about?
刚才谈什么？
We tried in vain to make him change his mind.
我们试图使他改变他的主意，但白费力气。
Sure enough, Rastus arrived punctually at seven o'clock that evening.
果然，当天晚上7点正，拉斯特斯准时回来了。