Why did Sra. López call him instead of me?

洛佩斯太太为什么给他打电话，而没给我打？

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Experiment results show that SRA and cement has better compatibility.

结果表明：减缩剂与水泥有较好的适应性。

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Experiment results show that SRA and cement has better compatibility.

结果表明：减缩剂与水泥有较好的适应性。

youdao