中文：

自贸区是指一个国家或地区在关境内外，取消或降低对货物的贸易限制和壁垒，扩大市场准入，促进贸易便利化的区域。自贸区是一种开放的经济形式，通过促进贸易自由化、便利化，提高经济效率和竞争力。

自贸区的主要特点包括：一是取消或降低关税和非关税壁垒，使区内企业可以享受更为优惠的税收政策；二是扩大市场准入，促进贸易自由化；三是促进投资便利化，吸引更多的国内外投资；四是推动金融创新和开放，促进跨境融资便利化；五是简化审批流程，提高行政效率。

自贸区的建设和发展有利于推动全球经济的繁荣和发展。自贸区可以带来更多的贸易机会，促进资源优化配置，提高经济效率。同时，自贸区还可以促进技术转移和知识溢出，推动产业升级和创新发展。

英文：

Free trade zone refers to a region within or beyond a country's customs boundary where restrictions on goods trade are lifted or reduced, market access is expanded, and trade facilitation is promoted. The free trade zone is an open economic form that aims to improve economic efficiency and competitiveness through promoting trade liberalization and facilitation.

The main features of the free trade zone include: first, lifting or reducing tariff and non-tariff barriers to enable enterprises within the zone to enjoy more preferential tax policies; second, expanding market access to promote trade liberalization; third, facilitating investment to attract more domestic and foreign investment; fourth, promoting financial innovation and openness to facilitate cross-border financing; fifth, simplifying approval processes to improve administrative efficiency.

The construction and development of the free trade zone are conducive to promoting the prosperity and development of the global economy. The free trade zone can bring more trade opportunities, promote optimal allocation of resources, and improve economic efficiency. At the same time, the free trade zone can also promote technology transfer and knowledge spillover, driving industrial upgrading and innovative development.