single-operator welder

例句：

1. 1.He is a single-operator welder who has been working in the industry for over 20 years.
   他是一名拥有超过20年工作经验的单人操作焊工。
2. 2. The construction site requires skilled single-operator welders to ensure safety and quality.
   施工现场需要熟练的单人操作焊工来确保安全和质量。
3. 3. The company offers training programs for its single-operator welders to improve their skills.
   公司为其单人操作焊工提供培训课程，以提升他们的技能。