dark： the fact of there being no light somewhere 黑暗，暗处 darkness： the quality of being without light, or a situation in which there is little or no light 暗，黑暗，阴暗
dark brown discharge - Warmwinds Blog
dark： the fact of there being no light somewhere 黑暗，暗处 darkness： the quality of being without light, or a situation in which there is little or no light 暗，黑暗，阴暗
