( diving bells)
A diving bell is a container shaped like a bell, in which people can breathe air while they work under water.
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( diving bells)
A diving bell is a container shaped like a bell, in which people can breathe air while they work under water.
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Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006