Convexification
凸化
🗣️ 情景例句
I promised you a surprise, didn't I?
我答应过要给你一件惊喜， 不是吗？
I ought to write a letter.
我应该写一封信。
Normal people tend to forget this process unless and until they are reminded of it.
衰老的过程，不经提起，正常人容易忘记；一经提醒，才会记起。