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

• 尽管那只瓶子呈淡绿色，但细心的客人很快就会发现瓶里装的是一种看上去黏稠，颜色发灰的东西。