名词
中文翻译：退行性
同义词：
['regressive', 'degenerative']
例句：
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1. The aging process is a natural part of life, and we should not be ashamed to acknowledge it.
衰老过程是生命的一部分，我们不应该为此感到羞耻。
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2. The degeneration of the economy has led to widespread unemployment.
经济的衰退导致了广泛的失业。
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3. The disease's progression was slow but eventually led to death.
这种疾病的进展缓慢，但最终导致了死亡。