英 [ˈreɪlz] 美 [reɪlz]
n. 铁路（rail的复数形式）
rail /reɪl/ CET4 TEM4
可数名词 A rail is a horizontal bar attached to posts or around the edge of something as a fence or support. 栏杆
They had to walk across an emergency footbridge, holding onto a rope that served as a rail.
他们不得不抓着当作栏杆用的绳子，走过一架应急人行桥。
可数名词 A rail is a horizontal bar that you hang things on. (挂物用的) 横杆
This pair of curtains will fit a rail up to 7 ft 6 in wide.
这副窗帘适合安装在宽度为7英尺6英寸的横杆上。
可数名词 Rails are the steel bars which trains run on. 铁轨
The train left the rails but somehow forced its way back onto the line.
火车偏离了铁轨，但又设法回到了原来的轨道上。
不可数名词 If you travel or send something by rail, you travel or send it on a train. 乘火车; 用火车 (运送)
The president travelled by rail to his home town.
总统乘火车回到了家乡。
名词 any of various small wading birds of the genus Rallus and related genera: family Rallidae, order Gruiformes (cranes, etc). They have short wings, long legs, and dark plumage 普通秧鸡
动词 to provide with a rail or railings 提供护栏
动词 to complain bitterly or vehemently 强烈抗议
to rail against fate
习语 If something is back on the rails, it is beginning to be successful again after a period when it almost failed. 东山再起
It may take some time to get the economy back on the rails.
可能要花一些时间使经济重回正轨。
习语 If someone goes off the rails, they start to behave in a way that other people think is unacceptable or very strange, for example, they start taking drugs or breaking the law. 行为出轨
They've got to do something about these children because clearly they've gone off the rails.
他们必须对这些孩子采取点行动，因为很明显他们的行为已经出轨了。
铁路股票
秧鸡属
... Rad 酷毙 RAILS 肋骨 或者指两桥之间板底的两个边 RAILSLIDE 骑肋 滑板底，右膝弯曲，但也有左右转几次弯？ ...
... 78、Rad酷毙 79、RAILS肋骨，或者指两桥之间板底的两个边 80、RAILSLIDE骑肋，滑板底。 ...
... railroading 铁路建设 rails 铁路股票 rails and accessories 钢轨与配件轨料 ...
...都很容易爱上Python这门语言。自从1991年诞生以来，Python现在已经成为最受欢迎的动态编程语言之一，其他还有Perl、Ruby等。由于拥有大量的Web框架（比如Rails（Ruby）和Django（Python）），最近几年非常流行使用Python和Ruby进行网站建设工作。
Several cars went off the rails.
有几节火车车厢出轨了。
It may take some time to get the economy back on the rails.
可能要花一些时间使经济重回正轨。
The train left the rails but somehow forced its way back onto the line.
火车偏离了铁轨，但又设法回到了原来的轨道上。
The bathyscaphe is over 16 meters long, and its gasoline-filled flotation chamber's deck,rails, and conning tower make it look a bit like a submarine.
VOA : standard.2010.06.21
In the late 19th Century, Johnstown was the nation's mightiest steel center - more prosperous than Pittsburgh - turning out steel rails and barbed wire.
VOA : standard.2010.04.26
The V8 charges up a 24kWh battery pack, situated between the rear frame rails.
The article 'Riding the rails like a Mumbaiker' was published in partnership with Lonely Planet.
Let me do one quick announcement and try to get this back somehow onto the rails.
Rails框架首次提出是在2004年7月，它的研发者是26岁的丹麦人David Heinemeier Hansson。不同于已有复杂的Web 开发框架，Rails是一个更符合实际需要而且更高效的Web开发框架。Rails结合了PHP体系的优点（快速开发）和Java体系的优点（程序规整），因此，Rails在其提出后不长的时间里就受到了业内广泛的关注。