关于马尔堡病毒一旦进入人群的行为的信息贫乏。
Information on the behaviour of Marburg virus once it enters a human population is sparse.
对马尔代夫抱有幻想的科学家越来越少，由于这里是世界海平面最低的国家，一旦全球持续变暖，冰盖将会融化，海平面上升，将会淹没这个国家。
Few scientists hold out much hope for the Maldives — the world's lowest nation — if global warming continues to melt the ice caps and raise sea levels.
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