晨光始的英文

• beginning of morning twilight

• 晨光:    the light of the early morni ...
• 始:    beginning; start
• 航海晨光始:    beginning of nautical morning twilight
• 民用晨光始:    beginning of civil morning twilight
• 天文晨光始:    beginning of astronomical morning twilight

例句与用法

1. The best time for stellar observation is after the end of evening twilight and before the begining of morning twilight
   每天最理想的观测时间是由昏影终时开始至晨光始时结束。