7.When the steam engine came，handloom weaving naturally declined蒸汽机的出现，自然使得手工机织业衰退。 卡耐基生于工业革命（18世纪中叶-19世纪中叶）后期，此前英国人瓦特（1736—1819）发明了高效蒸汽机（1769），使得纺织工业的生产率大大提高，从而挤垮了手工纺织业。
decling：to becomesmaller，weaker or fewer下降，削弱，衰退，谢绝
eg：Her influence declinde greatly after she lost the election.
eg：He declined my invitation politely.
eg：a declinging birth-rate
his declinging years （i.e.those towards the end of his life）暮年
eg：a decline in population/prices/popularity.人口、价格/受欢迎的程度下降
eg：Manufacturing output is in decline.产量在下降。
eg：The stock market is on the decline.
eg：The industry fell/went into a decline soon after the war.
eg：The number of robberies in the area is on the decline.
8.I resolved then that the wolf of poverty should be driven from our door some day.I made up my mind then that some day we would have enough money to buy food and other necessities.我当时下定决心总有一天我们要解决温饱问题。（也可直译为：……总有一天我们要把穷困这只恶狼从家门口轰走。）
resolve （on/upon/against sth.）：to decide firmly决心
eg：I resolve never to give up.
eg：He resolved on/against （making）an early start.
eg：She resolved that she would never see him again.
此句由习语keep the wolf from the door：to have enough money to avoid hunger and need（免于穷困或挨饿）演变而来，
eg：In those days，no matter how hard the family worked，they could hardly keep the wolf from the door.
9.The question of starting for the United States was discussed from day to day in the family council.—— Every day my family discussed whether we should move to the United States.
from day to day/day by day：happening every day
eg：Things change from day to day.
10.I well remember that both father and mother thought the decision was a great sacrifice for them，nut that “it would be better for the two boys”。我记得很清楚父亲和母亲都觉得这个决定对他们来说是很大的牺牲，但是“对两个孩子来说更为有利”。
eg：He well forgot about the afternoon meeting.
11 ……and that was how I began my preparation for subsequent apprenticeship as a businessman.— ……working in the cotton factory as a “bobbin-boy”started me off learninghow to do business.就这样我开始了为后来实业家见习期的前期准备工作。 that is / was how / why / what，etc.：这就是……怎样/为什么/什么等……的。 That's why I'd left my mum and dad in the North，and came to London.这就是我告别留在北方的爸爸妈妈而只身来到伦敦的原因。
12.I cannot tell you how proud I was when I received my first week's earnings—one dollar and twenty cents.我简直不知道怎么形容我拿到第一个星期挣的1美元20美分时的自豪劲儿。
I cannot/ can't tell you how / what，etc.：用来表示无法表达的感情
eg：I just can't tell you how I felt when I heard the news.
eg：I can't tell you what a despicable man he was.
13.It was given to me because I had been of some use to the world.And I became a contributing member of my family！这钱给了我是因为我对社会有了点用处；还有，我已经能为家里作出点贡献了。（说明作者自豪的原因。）
be of use：be useful
be of + n = adj
eg：The meeting is of great importance.
eg：The painting is of great value.