Translate the following underlined sentences into English.对于基础阶层来说缺乏必要的“兜底”。同国民经济发展幅度相比,中国的社会保障事业及社会转移支付表现出一种明显滞后的情形。
CHINA'S SOCIAL SECURITY UNDERTAKINGS AND ITS SOCIAL TRANSFER PAYMENTS ARE OBVIOUSLY LAGGING BEHIND THE DEVELOPMENT OF ITS NATIONAL ECONOMY.
