mountain daylight saving time山区: mountain area; brae; sierra; ...夏令时: d.s.t. daylightsaving time; daylight saving time; dst daylight savings time; summer time; the summer seasom夏令时夏令时: daylight saving time双夏令时: double daylight saving time双重夏令时: double summer time下载手机词典可随时随地查词查翻译