Bertrand postulate
[计] 伯特兰假设
🧩 词语组成解析
n. 伯特兰(男子名)
🗣️ 情景例句
We're supposed to be there
我们应当先到那儿
A constant guest is never welcome.
久住非佳宾，常来不欢迎。
Indeed they can have a delightful surprise when they find something useful which they did not know they owned.
确实，一旦无意之中从自己的收藏品中找到某件有用的东西时，可以给人一种惊喜的感觉。