There are things that you only become totally conscious of in retrospect. 5)在我国，针灸疗法从古代起就有了。(date back to) In China,acupuncture dates back to ancient times. 6)这些爆炸肯定发生在我们离开之后，因为我们什么也没听见。(subsequent to) Those explosions must have been subsequent to our departure,because we didn't hear anything. 7)你有与此职位相关的经验吗？(be relevant to) What experience do you have that is relevant to this position? 8)作为一名运动员，他的最终目标是代表他的国家（参赛）。(ultimate goal) His ultimate goal as an athlete is to represent his country.There are things that you only become totally conscious of in retrospect. 5) 在我国，针灸疗法从古代起就有了。(date back to) In China, acupuncture dates back to ancient times. 6) 这些爆炸肯定发生在我们离开之后，因为我们什么也没听见。(subsequent to) Those explosions must have been subsequent to our departure, because we didn't hear anything. 7) 你有与此职位相关的经验吗？(be relevant to) What experience do you have that is relevant to this position? 8) 作为一名运动员，他的最终目标是代表他的国家(参赛)。(ultimate goal) His ultimate goal as an athlete is to represent his country