(名詞) 亦在鄉村地區或其他社區擔任消防志工的職業消防隊員。亦寫成 double hatter。
引句：
Like the other three full-time Waterloo firefighters who worked part-time in Wellesley, also known as "double hatters," Steinman left the rural fire department because of a concern over additional compensation benefits if he were to get sick.
—Liz Monteiro, "Another firefighter quits Wellesley volunteer squad," Waterloo Region Record, April 17, 2014
No one knows how many double-hatters Ontario has — most are quiet about their off-duty work for fear of provoking union leaders — but it is estimated there are hundreds among the 19,000 men and women who take time off their regular jobs to respond to fires, crashes and medical emergencies in small communities.
—Kate Hammer, "Union turns up the heat on firefighters who volunteer on days off," The Globe and Mail, September 17, 2014
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