They watched the sun set behind the distant dales.他们望着夕阳没入远处的山谷。She watched the sun set behind the mountains.她观看了山后的日落。She watched the sun set behind the hills.她看着太阳落山。He set behind him resolutely all his hopes of making a name for himself.他坚决抛弃了使自己出名的一切希望。