如果一个稳定的泥浆柱能在油井里成型，并通过它十足的压力将石油限制在海湾范围，那下一步就是将井里的泥浆粘合好，使油井永久封闭。
If a stable column of mud has been set up in the well, keeping the oil at bay through its sheer weight, the next step would be to set cement in the well and seal it off permanently.
冷气随后用风扇排入封闭空间，冷却了屋子，稳定了湿度。
The cold air was then expelled into a closed space using a fan, cooling the room and stabilizing the humidity.
乔布斯的说法是，封闭系统稳定性高。
Steve Jobs' rationale for the decision is that closing the system ensures stability.
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