土木工程编译词汇S-102-SCIdict学术词典... ... 直交方式 System，right-angle 环道系统 System，ring road 河川系统 System，river ...
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这一次他设想在桥的两端都安装一套环道系统，每个都有一系列四种速度的移动人行道。
This time he envisaged a loop system at each end of the bridge, with a series of four ever-faster walkways.
它们甚至比以往的交通环道（如曼哈顿市区建于上世纪的哥伦布环道）更加高效和安全（现代设计包括使靠近环形路的车辆减速的系统，以及禁止行人进入环形的中心区域）。
(Modern designs include mechanisms for slowing traffic down as it nears the roundabouts, for example, and do not allow pedestrians onto the centre of the circle).
不过现在这些新的人行道实质上只是从a到b的简单的运输装置，远比早期多环道、多速度并带有多出入口的系统要简单。
These new walkways, however, were essentially a single conveyor moving from a to B, far simpler than the earlier many-ringed, multispeed systems with multiple points of entry and exit.
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