cover in

• • 封盖，给…装顶盖：

    They decided to cover in the passage between the main building and the annex.

    他们决定在主楼与附属建筑物之间的过道上面加盖屋顶。

  • 填满(洞穴)：

    The grave was quickly covered in.

    坟墓很快被填好。