... 普通往复式：normal reciprocating 普通水准测量：ordinary levelling 普通商业楼宇：ordinary commercial premises ...
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An additive called casein created the self-levelling properties. It is extracted from ordinary milk and consists of amino acids.
干酪素作为提供流动性的添加剂，是一种从牛奶中提取出的氨基酸。
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