exhaustible

Your willpower is an exhaustible supply, so don't force yourself to finish tasks if you don't have to.

你的意志力是会枯竭的，所以如果没有必要，不要强迫自己完成任务。

For the coal is an exhaustible resource, Determination of its rational mining scale, its sustainable exploitation and utilization have caught extensive attentions of governments and theorists.

煤炭资源是一种可耗竭性资源，如何确定其合理的开采规模，实现可持续开发和利用已经引起政府和学术界的广泛关注。