求翻译：鉴于您在专业领域的杰出成就和对我们顾问工作的突出贡献，我们诚挚聘请您为我公司的高级顾问专家，聘期至2012年12月31日。是什么意思？

In view of your outstanding achievements in the professional field and outstanding contributions to our consultancy, we sincerely recruit you to my company's senior consultants, duration of employment to December 31, 2012.

In view of your professional in the field and the outstanding achievements of our consultancy work, we extend our sincere hire outstanding contributions to our company's Senior Adviser you expert, for a term to December 31, 2012.

In view of the fact that you in the professional field outstanding achievement and the prominent contribution which works to our consultant, we invite you sincerely for our company's senior consultant the expert, the term of engagement to December 31, 2012.

Due to your outstanding achievement in professional fields and outstanding contribution to our consultancy work we hired you for my company's senior consultants, duration up to December 31, 2012.

Due to your outstanding achievement in professional fields and outstanding contribution to our consultancy work we hired you for my company's senior consultants, duration up to December 31, 2012.