broken-down

动词 break-down:

1. make a mathematical, chemical, or grammatical analysis of; break down into components or essential features
   同义词：analyze, analyse, break down, dissect, take apart
2. make ineffective
   同义词：break down, crush
3. lose control of one's emotions
   同义词：break down, lose it, snap
4. stop operating or functioning
   同义词：fail, go bad, give way, die, give out, conk out, go, break, break down
5. separate (substances) into constituent elements or parts
   同义词：decompose, break up, break down
6. fall apart
   同义词：crumble, crumple, tumble, break down, collapse
7. cause to fall or collapse
   同义词：break down
8. collapse due to fatigue, an illness, or a sudden attack
   同义词：break down, collapse

形容词 broken-down:

1. in deplorable condition
   同义词：bedraggled, derelict, dilapidated, ramshackle, tatterdemalion, tumble-down
2. not in working order

bro.ken-down

adj.（形容词）
Out of working order.
不能用的
In poor condition, as from old age; infirm.
衰老的：处于糟糕状态的，如由于年老；虚弱的