Word: 新陈代谢 (xīnchéndàixiè) Traditional: 新陳代謝 新陈代谢 dictionary entry xīnchéndàixiè metabolism (biology); the new replaces the old (idiom) Full dictionary entry for 新陈代谢 Example sentences using 新陈代谢 2 sentences, showing page 1 of 1. 年纪大了，新陈代谢会变慢。 Niánjì dàle, xīnchén-dàixiè huì biàn màn. As you get older, your metabolism slows down. 社会总在新陈代谢中前进。 Shèhuì zǒng zài xīnchén-dàixiè zhōng qiánjìn. Society always moves forward as the new replaces the old.