Unbounded interval
无界区间
🧩 词语组成解析
unbounded
[[ʌn'baundid]]
a. 无边的, 无限的, 无节制的
🗣️ 情景例句
Thanks a lot.
十分感谢。
Where am I supposed to pay the excess train fare?
我应该在哪里补票？
The petrol had nearly all been used up.
汽油几乎已经用光。