nondescript
adjective uk/ˈnɒn.dɪ.skrɪpt/ us/ˈnɑːn.dɪ.skrɪpt/
平常的；平庸的；平淡无奇的
very ordinary, or having no interesting or exciting features or qualities
Their offices are in a nondescript building on the edge of town. 他们的办公室在城郊一座不起眼的建筑内。
Synonym: characterless