road

1、road 的原始画面是"骑马走通的一段"（它最早只表示"骑行"和"骑马突袭"，"供车马走的路"是后起的）。所有引申都是"一段路"：railroad、roadside、the road to recovery 康复之路、on the road 在路上/巡演中。
2、和 raid 是一家：抢的那一路写成 raid，走路的那一路写成 road；两者同源于 ride。
3、介词要分清：in the road 挡在路中间、on the road 在旅途中、by road 走公路（对比 by rail）。

road 道路，公路

来自古英语 rad,骑行，入侵，侵略，来自 Proto-Germanic*raido,骑行，来自 PIE*reidh,骑行， 词源同 raid,ride.后引申词义道路，公路。

road

road: [OE] Road comes from the same ultimate source as ride – and indeed in the Old English period it meant either simply ‘riding’ or ‘hostile incursion on horseback’ (a sense preserved in inroads [16] and also in raid, which is historically the same word as road). By the 14th century the sense ‘sheltered anchorage’ (now represented by the plural roads) had emerged, but the central modern meaning ‘track for traffic’ did not put in an appearance until the late 16th century (hitherto the main words for expressing this concept had been way and street).
=> inroads, raid, ride

road (n.)

Old English rad "riding expedition, journey, hostile incursion," from Proto-Germanic *raido (cognates: Old Frisian red "ride," Old Saxon reda, Middle Dutch rede, Old High German reita "foray, raid"), from PIE *reidh- "to ride" (see ride (v.)). Also related to raid (n.). In Middle English, "a riding, a journey;" sense of "open way for traveling between two places" is first recorded 1590s. Meaning "narrow stretch of sheltered water" is from early 14c. (as in Hampton Roads in Virginia).

Modern spelling established 18c. In 19c. U.S. use, often meaning "railroad." On the road "travelling" is from 1640s. Road test (n.) is from 1906; as a verb from 1937. Road hog is attested from 1886; road rage is from 1988. Road map is from 1786; road trip is by 1950, originally of baseball teams. Old English had radwerig "weary of travelling."

1. The road to peace will be long and drawn-out.

通往和平的道路将很漫长。

2. French soldiers squared off with a gunman at a road checkpoint.

在一个公路检查站法国士兵摆开架势，准备迎战一名持枪者。

3. The traffic on the approach road slowed to a crawl.

引路上车辆行驶缓慢。

4. The road divides; you should take the right fork.

路在这里分了岔；你应该走右边一条。

5. The wide road was blocked solid with traffic that moved along sluggishly.

宽阔的马路被缓慢前行的车辆堵得严严实实。

【motorway（free way，express way）, vessel, pavement（sidewalk）, highway, route, trail, street, way, road, channel, lane】
motorway（free way，express way）: 高速公路；
vessel: 血管，管道，一般指细小管道；
pavement（sidewalk）: 街道两旁的人行道；
highway: 通常指市区外可以通行各种机动车辆的交通干线;
route: 路线，航线；path：乡间小路，公园小径；
trail: 指人或兽在森林、荒野或山中踩出的小径或崎岖小道
street: 尤指城市中的道路；
way: 可指各种路、道或通道，也可指抽象的道路、方法；
road: 广阔平坦的大道，多指公路；
channel: 海峡，渠道，管道；
lane: 指农村或城镇的小道或小径，也指小巷；

【highway, route, avenue, trail, street, path, motorway, way, road, pavement, lane】
这组词都有“路”的意思，其区别是：
highway: 通常指市区外可以通行各种机动车辆的交通干线。
route: 指从此处通往彼处的路线、路程等。
avenue: 在美国，指城市中一侧或两侧建筑物林立的大道或马路；而在英国则常指通住乡村大住宅、私人大庄园或两旁栽树的道路。
trail: 指人或兽在森林、荒野或山中踩出的小径或崎岖小道。
street: 尤指城市中的道路，往往一侧或两侧有高大建筑物；还可指城市小镇、近郊可供人、车、马行走的平坦道路。
path: 多指由人或动物在田间、小丘或树丛中经常走动而踩出的小路，也指公园或花园等供人走的小径。
motorway: 高速公路，新词，特指为车辆快速通行而修的专线，美语为freeway或expressway。
way: 普通用词，含义广泛，可指各种路、道或通道，也可指抽象的道路。
road: 指连接两地间供行人或车辆使用的广阔平坦的大道，多指公路，也可用于引申意义。
pavement: 在英国，多指街道两旁的人行道，而美国人常用sidewlk表示人行道。
lane: 指农村或城镇的小道或小径，也指小巷。