「回旋處」英文係咩？

在香港，「迴旋處」的英文是 roundabout
可參考運輸處有關汽車駛入迴旋處前注意事項網頁：
http://www.td.gov.hk/road_safety/road_users_code/index/chapter_4_for_cyclists/using_roundabouts_/index.htm
網頁第一句是：
At a roundabout (迴旋處), those approaching must give way to traffic already on the roundabout. Any exceptions to this rule are always clearly indicated by the traffic signs and road markings.
譯文：(未進入迴旋處的車輛，應讓路給在迴旋處內行駛的車輛。例外的情況，通常都有交通標誌或 道路標記清楚指示。)

interchange
(高速公路上的)交流道;【美】立體交叉道[C]

slip road
通往高速公路之交流道

spaghetti junction
複式的公路交流道