Polish up your writing skills on a one-week professional course.通过上为期一周的专业课来提高你的写作技能。We originally planned on a one-week vacation, but we decided to make it two weeks instead.我们原本计划了为期一周的假期，但是后来决定改为两周。We have a one-week vacation in February.我们在二月份有一周的假期。