pick up the slack

نقص کار کسی را پوشش دادن .
جور بقیه رو کشیدن

to improve a situation by doing something that someone else has not done or not completed
بهبود دادن اوضاع با انجام کاری که قبلا کسی انجام نداده یا آن را به اتمام نرسانده
( With our best player injured, other players have to pick up the slack )