Aug 21

An inner tube is a big rubber ring used for floating in the water. It’s great for floating down a river and relaxing and looking at the scenery. Or if you have goggles and the river is clear, you can see the underwater scenery. Why is it called an inner tube? It’s probably because it was originally part of a large tire that was repurposed for floating. Now you can buy or rent inner tubes made only for swimming.

インナーチューブは水に浮くための大きなゴムの輪、つまり浮き輪です。リラックスして景色を見ながら浮き輪で川下りをしたら最適ですね。水が透明ならゴーグルで水中の景色も見られます。なぜ「インナーチューブ」なのか?おそらく、タイヤの中のチューブだった物を水に浮くために使ったからでしょう。今は、水遊びや水泳の為だけに作られたものを買ったり借りたりできます。

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