乐视是一家中国的互联网视频平台和内容提供商，成立于2004年。乐视最初以提供高清电影和电视剧的在线观看和下载服务起家，后来逐渐扩展到音乐、动漫、综艺等领域，成为了一个综合性的视频平台。

中文解释：

乐视在发展过程中，不断推出了一系列具有影响力的产品和服务，其中最著名的就是乐视超级电视。乐视超级电视以其高品质的画质、丰富的影视内容和智能化的操作系统赢得了用户的青睐，成为了中国智能电视市场的领导者之一。此外，乐视还推出了乐视盒子、乐视手机等产品，为用户提供更多的选择和便利。

英文解释：

In its development process, Letv has continuously launched a series of influential products and services. Among them, the most famous is the Letv Super TV. Letv Super TV has won the favor of users with its high-quality picture quality, rich film and television content, and intelligent operating system, becoming one of the leaders in the Chinese smart TV market. In addition, Letv has also launched products such as Letv Box and Letv Mobile, providing users with more choices and convenience.

然而，乐视在发展过程中也遇到了一些问题和挑战。其中最大的问题是债务危机。乐视在快速扩张的过程中，大量举债，导致债务规模不断扩大，最终引发了债务危机。此外，乐视还面临着市场竞争加剧、内容监管加强等问题。为了应对这些问题，乐视采取了一系列措施，包括优化产品结构、加强内容自制、推进全球化战略等。

英文解释：

However, Letv has also encountered some problems and challenges in its development process. The biggest problem is the debt crisis. During the process of rapid expansion, Letv borrowed a large amount of money, leading to a continuously expanding debt scale and ultimately triggering the debt crisis. In addition, Letv also faces intensified market competition and strengthened content regulation. To cope with these problems, Letv has taken a series of measures, including optimizing product structure, strengthening content self-production, and promoting globalization strategy.