人们担心，今天也会见到类似的结果：由于海洋气温升高，使过量化肥注入海洋导致氧气浓度降低。
It is feared that a similar effect is being witnessed today as rising sea temperatures and fertilisers washing into the oceans cause oxygen levels to fall.
屏住呼吸使过量的二氧化碳进入你的肺和血管里，当二氧化碳积聚在你的系统里如短跑运动这会伤害你的有氧要求。
Holding your breath keeps excess CO2 in your lungs and blood stream. This hurts you aerobically as CO2 builds up in your system (like a sprint activity).
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