名词
中文翻译：甜菜叶斑病
同义词：
['beet scab', 'beet yellows']
例句：
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1.The disease has been a major problem for the local farmers.
这种疾病一直是当地农民的主要问题。
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2.The affected leaves are turning yellow and falling off.
受影响的叶子开始变黄并脱落。
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3. The disease is caused by a fungus that feeds on the sugars in the leaves.
这种病是由一种真菌引起的，它以叶片中的糖分为食。