twilight

Compared meaning: having little or no light (adjective).

比较义项：形容光线昏暗、缺乏亮度（形容词）。

• dark

  The most general and strongest word for lack of light; can describe total darkness in a place, unlike words tied to a specific light level or time of day.

  语气最强、最通用的“黑暗”一词，可以指完全没有光线的状态，不像其他词那样限定具体的光线程度或时间段。

  The basement was completely dark; I couldn't see my hand.

  地下室完全漆黑一片，我连自己的手都看不见。

• twilight 本词

  Refers specifically to the dim light just before sunrise or after sunset, tied to that time of day rather than describing darkness in general.

  特指日出前或日落后那段微弱光线的时段，与具体的时间点相关，而不是泛指昏暗。

  We watched the sky turn a soft orange at twilight, just after sunset.

  日落后不久的暮光时分，我们看着天空变成柔和的橙色。

• dim

  Describes a weak or faint light, often from a specific source, not the total absence of light; commonly used for lamps, rooms or views.

  形容微弱、不明亮的光线（常指某个光源），而不是完全没有光线；常用来形容灯光、房间或视野。

  The dim streetlight barely lit the narrow alley behind our house.

  昏暗的路灯几乎照不亮我们家后面那条狭窄的小巷。

• gloomy

  Dark in a way that also suggests a sad or depressing mood, often used for weather, skies or atmospheres rather than just light level.

  形容昏暗中带有令人沮丧、忧郁的情绪色彩，常用来形容天气、天空或氛围，而不仅仅是光线程度。

  The gloomy grey sky made the whole afternoon feel sad and heavy.

  阴沉灰暗的天空让整个下午都显得压抑而沉闷。

Dark, twilight, dim, and gloomy all describe weak or missing light. Dark is the strongest and general. Twilight is the faint light before sunrise or after sunset. Dim is a weak light from a source, like a lamp. Gloomy adds a sad feeling to darkness.

这几个词都能形容光线不足或昏暗的状态，但侧重点、程度和使用场合各不相同：dark 语气最强最通用，twilight 专指黎明或黄昏的微光时段，dim 强调光源微弱而非完全无光，gloomy 则常带有令人沮丧的情绪色彩。这里不比较 dark 表示“肤色深”或“秘密的”之义，也不比较 gloomy 表示“悲观、沮丧”心情的比喻义，以及 twilight 表示“（事业等的）衰落期”的比喻义。