silt|silted|silting

洪水过后，田地里堆积了一层厚厚的淤泥。

After the flood, a thick layer of ___silt was left on the farmland.

由于缺乏维护，港口逐渐被淤泥堵塞了。

The harbor became ___silted up due to lack of maintenance.

这条河流因为长期不清理正在逐渐淤塞。

The river is slowly ___silting up because of no maintenance.