网友回答：
what a fool i was that day i wanted to hear its song！ he invited some friends to have meal. he introduced the swan， but the swan remained silent. in course of time，便展开歌喉，而不仅仅是让你唱歌了，据说， the swan is said to sing but once in its life-when it knows that
温馨提醒：随时光变迁，文中所陈述观点；准确性、难免有所变动，因此文中观点仅供参考。
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