281. result 用法：result in 结果…； result from 由…造成。without result 白费。
Note: as a result　结果，作状语；as a result of　由于…的结果，表示原因； in the result
282. return 用法：return to; return the book; in return; many happy returns 祝你长寿
Note: return本身就有back的意思，不能与back连用。
283. right 用法：on the right; you are right; all right，It’s all right. That’s all right. That’s right.
Note: right作副词时表示正好，如：He was hit right on the face.
284. rob用法：rob sth. , rob sb. of sth. robber 劫匪，robbery抢劫
Note: rob sb. of sth. 还有“剥夺，使失去”You have robbed me of my happiness!
285. room 用法：standing room; make room for; bathroom
Note: room表示空间时是不可数名词。
286. round 用法：round the corner; all the year round
Note: a round trip表示往返；a single trip单程旅行。
287. run用法：run a race / a risk / across / after / against / away / away from / down. / for / into / off / out / over
Note: 作及物动词可表示“经营，管理”。run off one’s feet 忙得脚丫子朝天。run out of 人做主语。