(especially of a gas or liquid)without colour
(尤指气体、液体)无色的。
dull or pale in hue
颜色暗淡的;苍白的
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colorless cheeks .苍白的双颊。
lacking distinctive character or interest; dull
无特色的;无趣味的;不生动的
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the book is rather colorless, like its author .这本书就像它的作者一样,相当无趣。