boundless
adj. 无限的;无边无际的
例句
His reforming zeal was boundless.
他的改革热情是无穷尽的。
《柯林斯英汉双解大词典》
The child's delight was boundless; and Tom's not more moderate.
孩子的欢乐是无穷无尽的,汤姆的兴致也不相上下。
This is your chance to convey boundless enthusiasm for the subject.
这是一个表达你对所选学科无限热情的机会。