| 单词 | powdery mildew |
| 释义 | Word Frequency powdery mildewnoun Compare downy mildew 1. a plant disease characterized by a superficial white powdery growth on stems and leaves, caused by parasitic ascomycetous fungi of the family Erysiphaceae: affects the rose, aster, apple, vine, oak, etc 2. any of the fungi causing this disease |
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