with a kind and pleasant countenance; 和颜悦色
One's face is wreathed in smiles. 笑逐颜开
not have the face to appear in public 无颜见人
of all colours; multicoloured; colourful 五颜六色
Yan Yuan 颜元
牛津高阶第八版
美国韦氏词典
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维基百科 (自由的百科全书)