名词
中文翻译：覆盖物
同义词：
['cover', 'padding', 'bedding', 'blanket']
例句：
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1. The gardener uses straw to mulch the soil before planting.
园丁在种植前用稻草覆盖土壤。
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2. The man used mulch to keep his vegetable garden from being too hot in the summer.
这个人用覆盖物来防止他的蔬菜园在夏天过热。
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3. The farmer spreads a thick layer of mulch over the field to help retain moisture.
农民在田地上铺了一层厚厚的覆盖物，以帮助保持水分。