名词
中文翻译：哀伤的鸟
同义词：
['cuckoo', 'mourning dove']
例句：
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1. The cuckoo is a bird that sings a mournful song.
布谷鸟是一种唱着悲伤歌曲的鸟。
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2. The mourning dove is a small bird that often appears in times of sorrow.
哀悼鸽是一种常在悲伤时期出现的小鸟。
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3. The cuckoo's call is a familiar sound that can evoke feelings of sadness.
布谷鸟的叫声是一种熟悉的声音，能唤起悲伤的感觉。