Light from the sun reaches us in 8.5 minutes 在这句话中介词in

Light from the sun reaches us in 8.5 minutes 在这句话中介词in
Light from the sun reaches us in 8.5 minutes 在这句话中介词in

Light from the sun reaches us in 8.5 minutes 在这句话中介词in
Light from the sun reaches us in 8.5 minutes.
太阳光到达我们本体在8.5分内分钟到达.
这里的in表示在...（时间）的范围内
in 常用意思：在..., 在...之内,从事于..., 按照..., 穿着.
He was born in 1992. 他生于1992年.
I could finish the program in two weeks.我可以用两周时间完成这个项目.
He spend less time in reading.他读书时间很少.
The man in black jacket is our teacher.穿黑夹克的那个人是我们的老师.
一些与介词in的固定搭配,供参考：
表示时间
in 1999, in 20 century, in a flash(瞬时), in a lucky hour(在幸运时刻), in a minute, in a second, in a short time, in a while, in a wink(一瞬间) in advance(预先), in an emergency(在紧急地时候), in an evil hour(在不幸地时刻), in an instant, in ancient times, in broad day(在大白天), in course of, (在…期间), in December, in due course(及时地), in future, in good season(及时地), in no time(马上), in one”s childhood, in one”s spare time, in one”s teens, in one”s youth, in recent years, in season(适时), in seconds(在很短的时间), in some cases(有时候), in spring, in the afternoon, in the beginning, in the daytime, in the end, in the evening, in the future, in the long run(最后), in the meantime, in the morning, in the nick of time(在紧急关头), in the night, in the past, in the thick of (在最激烈的时刻), in the thick of(在最激烈的时刻), in this period, in those days, in time of war, in time,
表示地点
in a car, in a queue, in advance of (在…前面), in all the direction, in appearance, in corners(在角落里) in doors, in front (of), in good light(在光线好的地方), in heaven, in place(position)(在适当地位置), in places(处处), in port(在港内), in public places, in shore(靠岸), in society, in the air(在空中) in the bank, in the book(书的内容里), in the centre(在中央), in the countryside, in the distance(在远处那边), in the east of(在…东部) in the east, in the fields, in the film, in the front rank(在前列), in the front row, in the lab, in the letter(信的内容), in the middle of, in the moonlight, in the newspaper(报纸的内容里), in the open air(在户外), in the open(在野外), in the picture, in the rain, in the room, in the shade of, in the sky, in the suburbs of, in the sunshine, in the tree, in the universe, in the vicinity of(在附近), in the warm(在暖和的地方) in the world, in(on) the bus, in(on) the street,
表示状态
in progress(在进行中), in a dilemma(处于进退两难的境地), in a hurry, in a tight corner(处于困难中), in action(在行动中), in an emergency, (处于紧急情况中), in anxiety, in astonishment, in bad mood(心情不好), in bad temper(心情不好,生气), in bed, in blossom(bloom) (在开花 ), in bonds(在拘留中), in chains(在囚禁中), in charge(看管), in church, in class, in collision(在冲突中), in commission (在服役), in condition(健康情况良好), in confusion (在混乱中), in control (of), in court(出庭), in custody(拘留), in danger, in debt(负债) , in deep water(s)(处于困境), in demand(有需求) in despair, in difficult, in dispute(在争论), in doubt, in employment, in exile(在流放), in fear and trembling(提心吊胆), in flight(飞行), in flood, in full blossom(开着花), in good condition, in good health, in high spirits, in horror, in hospital, in isolation. in love, in

motion, in need (of) in operation(在运转), in order(状态良好), in panic, in peace(平安)(at peace和平), in peril(处于危险), in place, in power, in practice(在实践中), in preparation, in process(在进行中), in production, in progress(前进,进行中), in pursuit(在追赶中), in question(正被讨论), in rehearsal(在彩排), in retirement(退休), in retreat(在撤退) in sail(张着帆) in secret, in service, in session(在会议中), in short supply, in silence, in sorrow, in stock(有库存) in store(储藏着) in succession, in surprise, in suspension(悬浮中) in tears(流着泪) in the field(在作战), in the press(在印刷), in the red(负债), in the same boat(处境相同), in the works(在计划中), in thought, in trade, in triumph, in trouble, in use, in view(被考虑), in wonder, in work(有工作), in work, in(at) college, in(at) school, in(at) university,

在
在8.5分钟内

in这个介词表示时间时表示‘在。。。之内；用’但与将来时连用时表示一段时间之后，如：He will turn up in two hours.两个小时后他将会来这里。