名词
中文翻译：Unknown
同义词：
['bicolour', 'bichromatic']
例句：
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1. The painting is bigraded with blue and yellow.
这幅画是蓝黄双色。
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2. The flowers are bigraded in different shades of pink.
这些花有不同的粉色层次。
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3. The butterfly has a bigraded pattern on its wings.
这只蝴蝶翅膀上有双色图案。