Meanwhile, the Celtics maintained a lead over the Heat for nearly the entire first half and threatened to pull away on multiple occasions.
与此同时，凯尔特人几乎在整个上半场都领先于热队，且有将局势复杂化的预兆。
The facades of the existing buildings are maintained, including the windows, and a "skin" is attached to them, improving the insulation value, avoiding heat losses and reducing the energy demand.
原有大楼的立面包括窗户得以保持，新“表层”被附着到立面，提高隔热值，避免热量损失，减少能源需求。
They are as compact as classical gas heaters that only produce heat. Moreover, they can comfortably be mounted on the wall and easily be maintained.
这种设备不仅和传统的单纯气体加热设备一样紧凑，而且可以简单的安装在墙上，维护起来还很容易。
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