对街头商贩的观察与评论雷·布鲁利街头贩卖是世界各大城市自古就有的一种职业，虽然这一活动为经济注入了活力，但不少人把他们与拥挤、不卫生、不安全、逃税、出售劣质商品联系在一起。本文对世界各国的街头贩卖以全面评论，探讨这一经济活动长盛不衰的原因。资料主要... Observations and Comments on Street Vendors Ray Bluffy Street is a profession that has existed in the world’s major cities since ancient times. Although this activity has injected vitality into the economy, many people have crowded them and are not hygienic. Insecurity, tax evasion, and the sale of inferior goods are linked together. This article gives a comprehensive review of the street traffic in various countries of the world and discusses the reason why this economic activity is prosperous. Data main...