名詞 rub:

1. an unforeseen obstacle
   同義詞：hang-up, hitch, snag
2. the act of rubbing or wiping
   同義詞：wipe

動詞 rub:

1. move over something with pressure
2. cause friction
   同義詞：fray, fret, chafe, scratch
3. scrape or rub as if to relieve itching
   同義詞：scratch, itch

1. In his job he's rubbing shoulders with film stars all the time.
   他在工作中一直與電影明星有來往。
2. Please give the table a good rub with this cloth.
   請用這塊布好好擦擦桌子。
3. He rubbed his hands to keep them warm.
   他揉搓著雙手來取暖。
4. I rubbed the window with a cloth.
   我用一塊布擦窗子。

rub

v.（動詞）
rubbed,rub.bing,rubs
v.tr.（及物動詞）

To subject to the action of something that moves back and forth with friction and pressure.
擦：受到摩擦力和壓力前后移動的物質(zhì)的運(yùn)動
To cause to move along a surface with friction and pressure.
使產(chǎn)生摩擦的動作：使…受摩擦力和壓力在某個表面上移動
To irritate; annoy:
觸怒；惹惱：
例句：
His laziness was beginning to rub me.
他的懶惰開始激怒我

v.intr.（不及物動詞）

To move along a surface with friction and pressure.
摩擦：受摩擦力和壓力沿著表面移動
To chafe with friction.
擦傷：因摩擦而受傷
To cause irritation or annoyance.
惹惱：使人不滿，惹人惱怒
To continue in a given situation, usually with some difficulty:
通常在困境中持續(xù)下去：
例句：
Despite all our problems, we continue to rub along.
盡管有很多問題，我們?nèi)詧猿窒氯?/br>
To admit rubbing:
被摩擦：
例句：
a blackboard that rubs clean easily.
很容易擦干凈的黑板

To be transferred by contact or proximity:
沾光：通過接觸或接近而轉(zhuǎn)移：
例句：
wished some of her luck would rub off on me.
希望她的運(yùn)氣可以轉(zhuǎn)到我這兒點

n.（名詞）
The act of rubbing.
擦：摩擦的動作
The application of friction and pressure:
揉搓，按摩：摩擦力和壓力的應(yīng)用：
例句：
a back rub.
后背按摩

An unevenness on a surface.
表面不平
An act or a remark that annoys or hurts another.
傷人感情的事，令人惱怒的話：使另一個受傷害或煩惱的行為或話語
Difficulty:
困難：
例句：
.Ay, there`s the rub.(Shakespeare)
.啊，難就難在這兒.(莎士比亞)

<常用詞組>rub down
To perform a brisk rubbing of the body, as in massage.
按摩時，快速摩擦身體
rub in
To harp on (an unpleasant matter).
反復(fù)講（令人不愉快的事）
rub out
To obliterate by or as if by rubbing.
擦掉，磨掉：通過或好象通過摩擦去掉
Slang To kill; murder.
【俚語】 殺掉；干掉
<習(xí)慣用語>rub elbows 或
rub shoulders
To mix or socialize closely:
與…密切混合或交往：
例句：
diplomats rubbing elbows with heads of state.
與國家元首交往密切的外交家

rub (one`s) hands
To experience or display pleased anticipation, self-satisfaction, or glee.
經(jīng)歷或表現(xiàn)出滿意的期望，自我滿足或歡快
rub (someone`s) nose in【俚語】
To bring repeatedly and forcefully to another`s attention.
不斷地強(qiáng)制性地引起另一個人的注意
rub (someone) the wrong way
To annoy; irritate:
激怒；惹惱：
例句：
.One can see . . . how[his] expression of his ideals and intentions must have rubbed many people the wrong way. (Christopher Lehmann-Haupt)
.能夠看出…[他的] 觀念與意圖的表達(dá)是如何激怒許多人的. (克里斯托弗·萊曼——豪普特)

rub up on
To refresh one`s knowledge of:
復(fù)習(xí)，溫習(xí)：
例句：
I have to rub up on my French.
我得溫習(xí)一下法語了

來源：
Middle English rubben
中古英語 rubben