施工结束后，一层薄薄的灰尘落在了家具上。

After the construction work, a fine layer of dust ___settled on the furniture.

沙尘暴过后，一层厚厚的沙子沉积在沿海公路上。

Following the sandstorm, a thick layer of sand ___settled on the coastal highway.

如果你不封好面粉袋，颗粒物就会落在你的厨房台面上。

If you leave the flour sack open, particles will ___settle on your kitchen counter.