farm based social security的用法和樣例：
例句
- Relevent measures and system of Chinese rural social security have developed from ancientry to modem times.
摘要中國農村社會(huì )保障的相關(guān)措施與制度，從古代到現代是不斷發(fā)展的。 - But it is not enough in the extent and still instable while family security remains the basic pattern in rural areas.
但程度還不高，也不穩定，家庭保障仍是農村社會(huì )保障的基本模式，保障功能比較脆弱。
