bath.y.sphere
n.（名词）A reinforced spherical deep-diving chamber in which persons are lowered by a cable to study the oceans. The bathysphere, limited to depths of about 900 meters (3,000 feet), has been supplanted by the safer and more navigable bathyscaph.海潜球：一种坚固的球形深海潜水器，用缆绳把载人的球形舱降低以观测海洋。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
