Despite the fact that the bottle is tinted a delicate shade of green, an observant visitor would soon notice that it is filled with what looks like a thick, greyish substance.

• 尽管瓶子呈现嫩绿色，但观察力敏锐的客人不久会注意到，瓶子里装的看上去像是浓厚的灰色物质。