The two analogies we use " was strengthening our immune system or stronger "psychological engine" that has the capacity to endure more not just from the negative to zero, but also from the zero to the positive.

我们使用的两个类比,是加强我们的免役系统或加强“心理引擎“,获得更强大的忍受能力,不只是从负到零，还要从零到正。

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Your battery capacity is perilously close to zero.

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Northwick Park Hospital and Clinical Research Centre, Harrow, cut its backlog of routine CT scans from 18 weeks to zero for lung cancer patients, by ensuring the scanner was used to full capacity.

BBC: Cancer waiting times cut

This saving is more than paid for by the value of the saved generating capacity, so the net cost of saving the gas itself is less than zero.

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