It was a perfection of a valve that made the aqualung possible and put man back into the sea with all the freedom of a fish.

  • 是阀的完善使研究水中呼吸器成为可能,并将人类送到海里,使其象鱼一样自由。

  • 互联网摘选 2025-01-19 23:47:41

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