水上安全のために救命胴着を着用することが重要です。
Caisson disease, also known as decompression sickness or the bends, is a condition that can occur when a person ascends too quickly after being in a high-pressure environment, such as deep-sea diving or working in a caisson.
The value of a good education cannot be measured in terms of money.
Wearing a lifejacket is essential for water safety.
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