由於是要舉辦給系上所有同學參加的活動，身為系學會幹部的一員，如何構思、

由於是要舉辦給系上所有同學參加的活動，身為系學會幹部的一員，如何構思、規劃以及組織活動，是我們最重要的責任。

結果 (英文) 1:

Because it is to hold on to all students to participate in the activities of the Department, as a system of cadres to learn, how to brainstorm, plan and organize activities, is our most important responsibility.

結果 (英文) 2:

As we are to organize activities for all students in the department, it is our most important responsibility to be a member of the Department's cadres and to organize activities.

結果 (英文) 3:

As a member of the Faculty of the Department, how to design, plan and organize activities is our most important responsibility.