interior /inˈtiəriə/ I. adj. 内部的，国内的，室内的：the interior walls of the building大楼的内墙；interior angle 内角；the interior rooms of a house 房子的里间 ‖II. n.［c］内部，内地：travel in the interior of China 在中国内地旅行；the U.S. Department of the Interior 美国的内政部The interior of the cave was dark. 洞里是黑暗的。