seacrust

例句：

1. 1. The ship sank into the seacrust and was buried for days.
   船沉入海底沉积层，被埋了好几天。
2. 2. The scientists found evidence of ancient seacrust fossils in the area.
   科学家们在该地区发现了古代海底沉积化石的证据。
3. 3. The research team is studying the seacrust to understand its impact on marine life.
   研究小组正在研究海底沉积物，以了解其对海洋生物的影响。