承办人的英文：
undertaker

• to bear; to shoulder; to undertake; to assume
  担负
• A chivalrous or adventurous undertaking.
  大胆的或冒险的经历
• Their installation proved a laborious undertaking.
  要来安顿这些人，确实是一件麻烦的事情。
• To undertake aircraft engine repair activities.
  进行飞机发动机的修理工作。
• Roosevelt was reluctant to undertake the thankless task
  罗斯福不大愿意承担这种徒劳无益的任务。