名词
中文翻译：碱性土
同义词：
['alkali earth', 'alkaline earths']
例句：
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1.The soil is alkaline, which makes it difficult for plants to grow.
土壤呈碱性，这使得植物难以生长。
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2.The alkaline earth reacts with acids to form salts.
碱土与酸反应形成盐。
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3.The alkaline earth was used as a base for soap production.
碱土被用作肥皂生产的基料。