Such as sand not clean (mud high content), sand the fineness modulus too high or too low, also can make the strength of concrete is reduced, and the water increased.

如砂石不干净(泥含量较大)、砂的细度模数过高或过低等，也会使混凝土强度降低、泌水性增加。

youdao

The downside is there's less mud clearance and durability is potentially reduced.

不足在于只能清除少数的淤泥和耐用性可能降低！

youdao

He throws me into the mud, and I am reduced to dust and ashes.

神把我扔在淤泥中，我就象尘土和炉灰一般。

youdao

Network Rail said once engineers had removed the mud, rubble and debris and made the line safe, trains would resume at a reduced speed.

BBC: Abseilers inspect Devon railway line landslip