I felt like an ornithologist looking for a rare species.
我觉得自己好像是一个正在寻找稀有物种的鸟类学家。
Several years ago a rare species of bird for some unknown reason.
几年前，因为某种无人知晓的原因，这种稀有的鸟绝迹了。
The zoos can preserve for the long-term many rare and precious animal species.
动物园可以长期保存许多珍稀动物物种。
The zoos can preserve for the long-term many rare and precious animal species.
动物园可以长期保存许多珍稀动物物种。
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