cumbersome

cumbersome
/ˈkʌmbəsəm; `kʌmbɚsəm/ adj
1 heavy and difficult to carry, wear, etc （对於携带、 穿戴等）笨重的
    a cumbersome parcel, overcoat 沉重的包裹、 大衣.
2 slow and inefficient 迟缓而缺乏效率的
    the university's cumbersome administrative procedures 这所大学拖拖拉拉的行政工作.

牛津英汉双解词典