一段时间的英文为： period of time; stretch。
period of time
1、The inscription of the monument has worn away over a long period of time.
年深月久，碑文已经磨灭了。
2、This crisis might last for a long period of time.
这次危机可能持续很长时间。
3、I have never seen such a seismic shift in public opinion in such a short period of time.
我从未见过公众舆论在如此短的时间内发生如此巨大的转变。
4、How could you do it in such a short period of time?
你是怎么在如此短的时间里做到的？
5、Smoking a lot of cigarettes can harm and even kill over a long period of time.
长期大量吸烟会危害身体健康，甚至导致死亡。
stretch
1、The procession stretched for several miles
游行队伍长达数英里。
2、It's a very dangerous stretch of road
这是一段非常危险的路。
3、He yawned and stretched
他打了个呵欠，伸了伸懒腰。
4、He was fluent in French, having spent stretches of time in Southern France.
他曾在法国南部呆过一段时间，法语流利。
5、The talks could be stretched into the summer of 1993.
该谈判可能会延续至1993年夏天。
Lisa要去旅行
