意思1.天空。【组词】:苍穹、清穹
意思2.中间隆起而四边下垂的样子。【组词】:穹庐
意思3.深。【组词】:穹谷
意思4.高大。【组词】:穹石
adj.:completely, thoroughly; big; distant, far; deep、n.:vault, dome