BBC News with Marion Marshall. The United Nations Children's Fund, Unicef, has warned that the Central African Republic, _________________________________________The UN says severely overcrowded camps and poor water and sanitation are a deadly combination for children. Paul Wood is at a refugee camp at Bangui international airport. 来自玛莉安`马歇尔的BBC新闻 联合国儿童基金会发出警告称,__________________________________联合国表示,严重超员的难民帐篷、恶劣的水质与卫生条件对儿童来说是致命打击. 保罗`伍德在班基国际机场的难民账篷中报道.