1. 无限的：bounding surface 边界曲面 | boundless 无限的 | box 框

2. 无边无际：闻名遐迩 known far and wide; well-known; famous | 无边无际boundless | 无可抗拒的Overpowering

3. boundless的近义词

3. 漫无边际,无边无际：17) appropriate 恰如其分,恰到好处 | 18) boundless 漫无边际,无边无际 | 19) furious 怒气冲天,怒不可遏

4. 无限的, 无边无际的：bounding wall || 围墙 | boundless || 无限的, 无边无际的 | boundlessly || 无穷地, 无限地

1. 无止境的；无限的
    If you describe something as boundless, you mean that there seems to be no end or limit to it.

    e.g. The work demanded boundless energy and theatrical imagination...
           这种工作需要具备无限的精力和夸张的想象力。
    e.g. His reforming zeal was boundless.
           他对于改革热情无限。

1. seemingly boundless in amount, number, degree, or especially extent

    e.g. unbounded enthusiasm
           children with boundless energy
           a limitless supply of money

    Synonym: unboundedlimitless