两年前，花叶病毒使非洲损失了超过一半的木薯，而这种作物是当地人的主要食物。
Two years age, Africa lost more than half its cassava crop — a key source of calories — to the Mosaic virus.
两年前，花叶病毒使非洲损失了超过一半的木薯，而这种作物是当地人的主要食物。
Two years age Africa lost more than half its cassava crop — a key source of calories — to the Mosaic virus.
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