15. The waterproof material is suitable for the aerial used near the waterfall.

这种耐水材料适合用在瀑布附近的天线。

Fred had told him he was dressed in his National Guard gear that morning, which included a pair of jump boots made with a waterproof material called Corfam.

弗雷德告诉他，那天早上他穿着国民警卫队的装备，其中包括一双用名为 Corfam 的防水材料制成的跳靴。