相关单词近义词adj. even, horizontal, level, low, plane, smooth, burst, dead, dull, empty, lifeless, plain, positive n. apartment, pad, penthouse, rooms, tenement反义词adj.crooked, tortuous临近词flatten, flask, Flatz, Flath, Flati, Flatt, flats, Flatto, flatly, Flaten, Flatte, flatty 返回 flattest