Having a smoke-free environment often saves money for bars and restaurant owners, reducing their risks of fire and consequently their insurance costs.
无烟环境通常为酒吧和餐馆业主节约资金，减少火灾风险并因而降低他们的保险费用。
The evergreen forests of the Amazon and Congo basins, for example, are generally fire-free because the closed canopy maintains a level of humidity that inhibits burning.
例如，亚马逊和刚果盆地的乔木通常是防火的，因为它们遮天的树冠保持了一定的湿度，抑制了燃烧。
All water used by the fire Brigade for fire extinction purpose is supplied free by an act of Congress.
根据议会的法案，消防队用于灭火的水全部免费供应。
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