utilitarian
adj
1 (sometimesderog 有时作贬义) designed to be useful rather than luxurious or decorative, etc; severely practical 实用的(非奢华的或装饰的); 功利的
The student accommodationis strictly utilitarian. 为学生提供的住宿极其实惠.
2 based on or supporting the belief that actions are good if they are useful or benefit the greatest number of people 功利主义的.
In this part of the cave, they could hear an insistent booming sound which they found was caused by a small waterspout shooting down into a pool from the roof of the cave.