diving helmet

例句：

1. 1. The diver was wearing a diving helmet when he entered the water.
   潜水员进入水中时戴着潜水头盔。
2. 2.She decided to go scuba diving with her friends after the rain stopped.
   雨停后，她决定和朋友们一起去潜水。
3. 3.He had been practicing his snorkeling skills for weeks before going on this trip.
   在这次旅行之前，他花了几周时间练习他的潜水技巧。