“填土”造句

填土的渗漏可能污染地下水和地面水.
Seepage from land fills can pollute ground water or surface.

紫山灰场粉煤灰作为一种冲填土,粒度细,似粉砂.
Pulverized coal ash is hydraulically filled on ground of Zishan.

大家抓起铁锹,开始往井里填土.
We grabbed shovels and began to fill the wells.