名词
中文翻译：Unknown
同义词：
['top layer', 'topsoil', 'soil cover例句：1. The farmer needs to top the soil before planting.（农民需要在种植前翻土。）']
例句：
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1. The farmer needs to top the soil before planting.
农民需要在种植前翻土。
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2. The topsoil is rich in nutrients that plants need.
表层土壤富含植物所需的养分。
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3. The topsoil should be removed before digging a garden.
在挖花园之前，应该先移除表层土壤。