The repeated emission of a set group or pattern of flashes by a lighthouse or a light on a buoy; frequently attributive as "group flashing light".
Late 19th century; earliest use found in Freeman's Journal.
英语词典包含464360条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。