英语翻译For four years Newman observed scuba divers as they simulated walking on the Moon and on Mars on her underwater moving belt.这句话怎么翻译?句子里的as怎么解释?引导的什么从句啊?

英语翻译She also spent four years as a board member and Director for Crime Stoppers. for over four years是什么时态 I have been studying English for four years.就for four years提问 four years Four Years Mrs White left America four years ago用for four years 改写句子 They have study English for four years.有什么错 I'going to go to college for four years. 英语翻译they are both held every four years 英语翻译the pound plunged to its lowest level against the dollar for four years as the american surrency soared to a new peak...currency 拼错了，不好意思~ 英语翻译For four years the Class of '90 has worn the color purple.Today you meet on Severance Green to say goodbye to all of that 英语翻译Dearest Mother,You have been my mother for twenty-four and a half years,and for twenty-four and a half years you have mothered me very well,as much as any child can ask for.Since I was little you have cooked meals for me,listened to my pr 英语翻译Dearest Mother,You have been my mother for twenty-four and a half years,and for twenty-four and a half years you have mothered me very well,as much as any child can ask for.Since I was little you have cooked meals for me,listened to my pr four years,over Four Years Old 歌词 four years before 英语选择题时常见到for three years,for four years,那什么情况用现在完成时,什么情况用一般过去时? 英语翻译for the last 20 years