A mixture of brown aint (I used a remixed liquid wood stain antique oak aint, the Home Decor series by Delta) I got this 13 years ago. So I don't know if they still exist.

棕色颜料混合物我使用的是德尔塔公司出品的家装系列液态木色颜料。

youdao

For example, a steam engine can use coal, newspaper or wood for the fuel, while an internal combustion engine needs pure, high-quality liquid or gaseous fuel.

例如，蒸汽发动机可以用煤，报纸或木头作为燃料，而内燃机需要用纯的，高质量液体燃料或气体燃料。

youdao

The heat transforms the liquid into a resin, which makes the cell walls of the wood thicker and stronger.

液体就会在高温下变成一种树脂，可以使得木材的细胞壁变厚。

youdao

When the wood has been cut, liquid color called ink is painted onto the surface.

VOA: special.2009.09.02

Now BP will try to continue where Verenium left off, trying to turn sugarcane bagasse, agricultural waste, and wood products into liquid fuels for transportation.

FORBES: BP's Biofuels Play: Plan B or PR?

Some competitors may put their liquid into a steel vat with wood chips and speak of aging.

FORBES: Can Brugal Become the Stoli or Absolut of Rums?