If a diver ascends too quickly from a high-pressure underwater environment to a lower-pressure one, gases dissolved in blood and tissue expand and form bubbles.
如果潜水员从一个高压的水下环境迅速上浮到一个低压的水下环境，他们的血液和组织中溶解的气体就会膨胀并形成气泡。
The material use efficiency of China is lower than that of developed countries, and compared to USA, Chinese ecological environment system have more pressure.
中国的物质利用效率低于发达国家，和美国相比，中国的生态环境系统承受了更大的压力。
The material use efficiency of China is lower than that of developed countries, and compared to USA, Chinese ecological environment system have more pressure.
中国的物质利用效率低于发达国家，和美国相比，中国的生态环境系统承受了更大的压力。
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