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But now, with special breathing equipment, a diver can stay underwater for a long time.. After the invention of this equipment, men could swim freely underwater and scuba-diving became a[r]
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But now, with special breathing equipment, a diver can stay underwater for a long time.. After the invention of this equipment, men could swim freely underwater and scuba-diving became a[r]
Ngày đăng: 14/12/2021, 01:42
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