新陈代谢 Metabolism
Explanation
新陈代谢指生物体不断更新物质的过程，也比喻新事物代替旧事物。
Metabolism refers to the continuous renewal of substances in a living organism; it is also used metaphorically to refer to the replacement of old things with new things.
Origin Story
在古老的东方国度，有一片神奇的森林，森林里生长着各种各样的树木，它们经历着四季的变迁。春天，嫩芽从枝头探出，夏天，树叶茂盛，秋天，树叶变黄飘落，冬天，树木进入休眠。然而，即使在冬天，树木内部仍然进行着新陈代谢，积蓄着力量，等待着春天的到来。老树枯萎，新的幼苗破土而出，生生不息，这就是大自然的规律，也是生命的奇迹。森林中，不仅树木遵循着新陈代谢的规律，各种动物也一样。老鹰换羽，蛇蜕皮，动物们不断更新自己的身体，适应环境的变化。这是一个生生不息，充满活力的世界。在人类社会，新陈代谢也同样重要。旧的思想观念被淘汰，新的科技不断涌现，社会在不断进步和发展。一个民族，一个国家，如果不进行新陈代谢，就会失去活力，最终被时代所淘汰。所以，新陈代谢是自然界和人类社会永恒的主题。
In an ancient Eastern land, there was a magical forest where various trees grew and experienced the changing seasons. In the spring, tender buds emerged from the branches, in the summer, the leaves were lush, in the autumn, the leaves turned yellow and fell, and in the winter, the trees went dormant. However, even in winter, the trees still underwent metabolism, accumulating strength and waiting for the arrival of spring. Old trees withered, and new saplings broke through the soil, continuing the cycle of life, this is the law of nature, a miracle of life. In the forest, not only the trees follow the law of metabolism, but also various animals. Eagles molt, snakes shed their skin, animals continuously update their bodies to adapt to environmental changes. This is a vibrant world full of vitality. In human society, metabolism is equally important. Old ideas are eliminated, and new technologies continue to emerge, so society is constantly progressing and developing. A nation, a country, if it does not undergo metabolism, it will lose its vitality and ultimately be eliminated by the times. Therefore, metabolism is the eternal theme of nature and human society.
Usage
用于比喻事物不断更新，新事物代替旧事物。
Used to illustrate the constant change and the replacement of old things with new things.
Examples
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生物的新陈代谢是一个复杂的过程。
shēng wù de xīn chén dài xiè shì yīgè fù zá de guò chéng
The metabolism of living things is a complex process.
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社会也需要新陈代谢，才能保持活力。
shè huì yě xū yào xīn chén dài xiè, cáinéng bǎo chí huó lì
Society also needs metabolism to maintain its vitality.