“定昏” is pronounced as “dìng hūn”. In English, it can be translated as “dusk” or “twilight”. For example, “At dusk, the sky is filled with beautiful colors.” (定昏时分,天空布满美丽的色彩。) “The twilight brings a sense of tranquility.” (定昏带来一种宁静的感觉。) You can also use phrases like “at the time of dusk” or “in the twilight hours”. These expressions can help convey the meaning of “定昏” in English.