1590s, "not limited in extent," from un- (1) "not" + past participle of bound (v.1). Sense of "generous, profuse, liberal" is recorded from 1704. Related: Unboundedness.
双语例句
1. His advice was always sensible and his energy unbounded.
他的建议总是很明智，他的精力似乎永远也用不完。
来自柯林斯例句
2. His energy was unbounded and his patience inexhaustible.
他有无穷的精力和无限的耐心。
来自柯林斯例句
3. His ambition is unbounded.
他的野心毫无止境.
来自《现代汉英综合大词典》
4. But, the Court continued, this discretion is not unbounded.
可是, 法院接下去阐述说, 这种自由酌处权并非毫无约束.
来自英汉非文学 - 行政法
5. Clearly each plane graph has exactly one unbounded face.
