The UN withdrew its relief personnel because it judged the situation too dangerous.联合国认为局势过于危险，因此撤出了救济人员。Relief workers in alliance with local charities are trying to help the victims.救济人员与当地慈善机构联合起来，设法帮助那些灾民。Bands of gunmen have hijacked food shipments and terrorized relief workers.几伙持枪歹徒劫持了运输的食品，控制了救济人员。