Its beginnings obscured by unemployment caused by the world economic slow-down, the new technological unemployment may emerge as the great socio-economic challenge of the end of the 20th century.

• 新技术所引起的失业在开始时被全球经济衰退所造成的失业掩盖了，但到了20世纪末，它却可能会成为重大的社会经济问题。（根据语法结构判断）