The rest of the heat may be allowed to escape, or, for maximum engine efficiency, the steam may be condensed in a separate apparatus, a condenser, at comparatively low temperature and pressure.

剩余的热可以排放，或者蒸汽可在单独的冷凝器中于较低的温度和压力下冷凝，以便获得最大的蒸汽机效率。

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At 19 he went to London to study precision-instrument making, then worked for the University of Glasgow, where he devised his first major steam engine improvement: a separate, exterior condenser.

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