名词
中文翻译：沙覆盖层
同义词：
['sand cover', 'sand coating例句：1. The engineer studied the sand precoating on the road surface to determine its durability.（工程师研究了道路表面的沙覆盖层，以确定其耐久性。）2. The construction crew applied a new sand precoating to protect the concrete from weathering.（施工队伍在混凝土上施加了新的沙覆盖层，以保护其免受风化。）']
例句：
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1. The engineer studied the sand precoating on the road surface to determine its durability.
工程师研究了道路表面的沙覆盖层，以确定其耐久性。
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2. The construction crew applied a new sand precoating to protect the concrete from weathering.
施工队伍在混凝土上施加了新的沙覆盖层，以保护其免受风化。
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3. The sand precoating was designed to improve the drainage of the road surface.
沙覆盖层的设计旨在改善道路表面的排水性能。