Quasiconvexity
拟凸性
🗣️ 情景例句
Is it that serious a problem, Grandpa?
这个问题有那么重要吗，爷爷？
There is a crook in the lot of everyone.
人生皆有不如意处。
Sorry, I haven't. Why don't you ask Jim.
对不起，我没见。你为什么不去问问吉姆呢？