The bathysphere, limited to depths of about 900 meters (3,000 feet), has been supplanted by the safer and more navigable bathyscaph.
潜水深度限制在900米，现已被更安全、更能航行的深海潜测艇所代替。
The bathysphere, limited to depths of about 900 meters (3,000 feet), has been supplanted by the safer and more navigable bathyscaph.
潜水深度限制在900米，现已被更安全、更能航行的深海潜测艇所代替。
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