adj.无色的,苍白的,颜色黯淡的,无特色的
His complexion was colorless and he hadn't shaved.
他面无血色,胡子也没刮。
Water is not only colorless, but odorless as well.
水不仅没有颜色,也没有气味。
A chemist can analyze water into two colorless gases, hydrogen and oxygen.
化学家能将水分解成无色气体氢和氧.