Láowù shūchū shì zhège dìqū de zhòngyào shōurù láiyuán.
Labor export is an important source of income for this region.
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劳务 is a formal/legal term used in contracts and official documents. Common collocations: 劳务合同 (labor contract), 劳务输出 (labor export), 劳务派遣 (labor dispatch).
