s. tiresomely long; seemingly without end
s. infinitely great in number
s. having the ends united so as to form a continuous whole
a. 不停的, 无穷尽的, 无尽的
[机] 无端的, 环状的
1. The possibilities for adventure are endless.
冒险的可能性是无穷无尽的。
2. She has an endless supply of energy.
她有源源不断的精力。
3. We can talk about this topic for endless hours.
我们可以就这个话题聊上无尽的小时。