Unemployment appears, first of all, to be due to the decline of the economy, the reorganization of economic units in accordance with market principles, the rapid evolution of technology, as well as backward professional training.
161. 首先失业显然是由于经济衰退、根据市场原则实行的经济单位整顿、技术的迅速演变，以及落后的专业培训所致。