One in five Americans work extended hours -- that is, irregular schedules or typically outside the hours of 7 a.m. to 7 p.m.是什么意思_One in five Americans work extended hours -- that is, irregular schedules or typically outside the hours of 7 a.m. to 7 p.m.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句