形容词
中文翻译：苦的
同义词：
['sour', 'harsh', 'sour taste']
例句：
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1.The coffee was bitter and not very strong.
咖啡很苦，不太浓。
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2. Her words were bitter, but she meant well.
她的话很刻薄，但她是好意的。
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3. The medicine tastes bitter, but it's necessary for your recovery.
这药味道苦，但对你康复是必要的。