In practice, the agency system has decayed. Most "agents" now sell only to themselves or their immediate family.
实际上,这种代理制已经衰退。现在,大多数“代理人”都只把产品卖给自己或亲近的家人。
When not removed, plaque causes tooth decay and gum disease.
牙斑没有清除就会导致蛀牙和牙龈疾病。
There are problems of urban decay and gang violence.
存在都市衰败和黑帮暴力问题。