单词：mosaic virus
mosaic virus的用法和样例：
例句
- It causes an infection called wheat streak mosaic virus.它还引起了一场被称为小麦纺锤状条纹花叶病毒的传染病。
- 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。
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