名词
中文翻译：Unknown
同义词：
['Brown rot', 'Brown spot', 'Brown disease']
例句：
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1.The brown canker on the tree is spreading rapidly.
树上的褐色病斑正在迅速扩散。
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2. The farmers are worried about the brown canker affecting their crops.
农民们担心褐色病会影响他们的庄稼。
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3.The brown canker is a common problem in apple orchards.
褐色病是苹果园中常见的问题。