boundless
/ˈbaʊndləs/📚 16324 64托福If you describe something as boundless, you mean that there seems to be no end or limit to it. 无限的
adjective [原级]无限的；无边无际的
His reforming zeal was boundless.
他的改革热情是无穷尽的。
bound(边界， 范围) + less(较少的) → 无边无际的
单词造句:
His reforming zeal was boundless.
他的改革热情是无穷尽的。