surface sediment編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看surface sedimentsurface sediment — 名詞名詞1. the top layer of material that settles at the bottom of a liquid1.名詞釋義表層沉積物the top layer of material that settles at the bottom of a liquid例句Scientists collected samples of the surface sediment from the lake bed.