产品畅销不衰，有很好经济效益。
Products are sold briskly , have very good economic benefits.
此书当时轰动全美，多年后仍畅销不衰，赢得众多读者。
This novel stirred the America and sold well after many years, so it owns a lot of readers.
随身听已推出20周年，至今畅销不衰，全球已销售了2亿多部随身听。
The walkman has been selling well for two decades since its introduction, with 200 million having been sold globally.
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