Before a storm, sailors cover the hatches with waterproof material. Then they nail on battens to hold the hatch coverings firmly in place. This keeps rain and waves out of the ship.
在暴风雨之前，水手们用防水材料盖住舱口，然后用钉钉牢板条来把舱口的覆盖物很好的固定在位置上。
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Then they nail on battens to hold the hatch coverings firmly in place. This keeps rain and waves out of the ship.