---the burden

The time has come to lay my burden down. (荷を降ろす)


The burden of proof may only be fulfilled by evidence. (挙証の責任.)


The BBC World Service global study said that while all nations had felt the burden of
the higher costs, the problem was most acute in poorer countries.
(苦しい仕事［つらいこと］に耐える)

If you borrow their car be very sure it will not put a burden on your host(s), and at
the very least fill it up with gas before returning it. (厄介をかける)