ADJ-GRADED
（系统、机构等）负担过重的，不堪重负的
If a system or organization is overburdened, it has too many people or things to deal with and so does not function properly.
例句
The city's hospitals are overburdened by casualties.
大量伤员使该市的医院不堪重负。
...an overburdened air traffic control system.
超负荷运转的空中交通管制系统