An American charitable group, the Bill and Melinda Gates Foundation, says it will provide $50 million to aid workers fighting a growing Ebola outbreak in West Africa. ________________ The foundation also says it will work with partners to speed up the development of Ebola therapies, vaccines and diagnostic tests. 美国慈善组织"比尔和梅林达盖茨基金会"表示将为救援人员提供5000万美金,以抗击西非暴发的日益严重的埃博拉病毒. __________________ 该基金会同时表示将与合作伙伴一道加快开发埃博拉治疗方法,疫苗和诊断检测手段.