| 单词 | breathing mask |
| 释义 | breathing mask A cross between snorkelling and scuba diving, you swim deep underwater with a breathing mask that's attached to a floating air tank. The Sun He wears an asbestos suit with a breathing mask that affords him protection against fire and heat. Retrieved from Wikipedia CC BY-SA 3.0 When venturing outside, the explorers will need to wear breathing masks to protect their lungs from the cold air. Times, Sunday Times Forensic experts disproved this by connecting a breathing mask to the inside of the boot and breathing the air from the boot for seven hours, without ill effect. Retrieved from Wikipedia CC BY-SA 3.0 A cross between snorkelling and scuba diving, you swim deep underwater with a breathing mask that's attached to a floating air tank. The Sun |
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