civil twilight
plural of dulse
The period in which the sun is less than 6° below the horizon in the morning and evening.
plural of audio tour
(chemistry) Any reaction or process in which hydrogen is removed from a substance, especially the production of unsaturated organic compounds from saturated ones.
私たちは涼しい空気と柔らかな光を楽しむために、市民薄明(太陽が地平線の下約6度未満の時間帯)の間にジョギングに出かけた。
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