A substance that's not quite liquid or gas, known as supercritical fluid.

一种既不液体也不气体物质， 称为超临界流体。

It's important to note that fluid ounces measure volume, not weight, unlike the regular ounce.

注意, 流体盎司量体积, 而不量, 与常规盎司不同。

This fire is not burning the ground fuels themselves like the litter or organic material in the soil but just on the surface, it's the movement of a fluid.

这种火不像垃圾或土壤中有机物质那样燃烧地面燃料本身，而仅仅在表面上，这流体运动。