logjam
/ˈlɒgdʒæm/noun
1- a crowded mass of logs blocking a river（河道内运输木材时的）木材堵塞。
1.1
- a situation that seems irresolvable僵局：
the president can use the power of the White House to break the logjam over this issue.
总统可以行使白宫的权力来打破这个问题上的僵局。
1.2
- a backlog积压未办的事：
keeping a diary may ease the logjam of work considerably.
记日记可以大大减少积压未办的事。