求翻译：聘请单位关于为××申请办理《外国专家来华工作许可证》的申请函。请载明申请人及其随行家属姓名、国籍、护照号码，申请人拟聘职务、工作任务、工作期限。一个申请一张函；是什么意思？

Letter of application to employ the unit apply for Foreign Experts Work Permit "× ×. Please set out the applicants and their accompanying family members name, nationality, passport number, the applicant wanted to take on duties, tasks, duration of work. An application for a letter;

Hiring units on the X X application for the foreign experts to work in China of license applications. Please download the application and their accompanying family members name, nationality, passport number, an applicant recruitment, job tasks, work deadlines. One of the applicant a letter;