A reddish saliva soiled the corners of her lips, and she had a black hole in her mouth.
一条红口涎挂在她的嘴角上，嘴里一个黑窟窿。
2
Red light dissipates beyond about 30 feet (10 meters), so the reddish hue of this fish would appear black in deeper waters, allowing some degree of invisibility for this nocturnal hunter.
I lay lazily smoking and studying the colour of the sky, as we call the void of space, from where it showed a reddish grey behind the pines to where it showed a glossy blue-black between the stars.