Nine-to-five / 9 to 5, eight-to-12 hours

For each shot, Kelley would often spend at least eight-to-12 hours a day shooting the aircraft.

A snapshot of how busy the world’s biggest airports are
Thousands of airliners take off and land every day. Photographer Mike…
BBC.COM|由 STEPHEN DOWLING 上傳

我想知道 "eight-to-12 hours"或"8- to-12 hours"哪個頻率高？

朝九晚五  Nine to five

Nine-to-five definition, of, relating to, or during the workday, especially the hours from 9 a.m. to 5 p.m. when offices are characteristically open for business: the ...

9 to 5 (film) - Wikipedia