Unfortunately, the bathtub is not a spa-style tub with a secondary heating system and circulating jets, but rather a simple water containment vessel.

不幸的是，这个浴缸没有温泉热水模式，就是没有另外的加热系统和循环的喷嘴，而是个简单的水密闭容器。

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Unfortunately, the bathtub is not a spa-style tub with a secondary heating system and circulating jets, but rather a simple water containment vessel.

不幸的是，这个浴缸不是一个具有二次加热系统和循环射流的温泉式浴缸，而是一个简单的水容器。

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A closed vessel contains a certain mass of gas air, for example at a certain temperature. By heating we raise the temperature, and thus increase the energy.

在一个闭合的容器里装着一定质量和一定温度的气体(例如空气)，把气体加热，我们就提高了它的温度，因而也增加了它的能量。

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The glaze is applied to a fired stoneware vessel, which is then fired again in a repeated cycle of six stages of heating and cooling where precise temperatures matter a great deal: either over- or under-firing will spoil the effect.

UNESCO: Culture