obstacle, barrier, obstruction, bar, hindrance

名詞 obstacle:

1. something immaterial that stands in the way and must be circumvented or surmounted
   同義詞：obstruction
2. an obstruction that stands in the way (and must be removed or surmounted or circumvented)

1. Verification (eg Checking that weapons have been removed) could be an obstacle to an arms agreement.
   裁減軍備協(xié)議難以達(dá)成，癥結(jié)在於如何證實(shí)(如檢查武器確已銷毀).
2. Her father's opposition remained only their obstacle.
   她父親的反對是他們唯一的障礙。
3. An obstacle or a span to be jumped.
   需跳越的障礙或跨度
4. Lack of education is an obstacle of success.
   缺乏教育是成功的障礙。

ob.sta.cle

n.（名詞）
One that opposes, stands in the way of, or holds up progress.
妨害物：反對或阻礙進(jìn)步的事物

來源：
Middle English
中古英語
from Old French
源自 古法語
from Latin obst3culum
源自 拉丁語 obst3culum
from obst3re [to hinder]
源自 obst3re [阻礙]
ob- [against] * see ob-
ob- [反對] *參見 ob-
st3re [to stand] * see st3-
st3re [站立] *參見 st3-

<參考詞匯><同義詞>obstacle,obstruction,bar,barrier,block,hindrance,impediment,snagAll of these nouns refer to something that prevents action or slows progress.
所有這些名詞都指阻止行動(dòng)或延緩進(jìn)步的事物，
Obstacle applies to something that stands in the way and must be removed, circumvented, or surmounted:
Obstacle 用于指擋在路中，必須被搬走或繞行或被克服的事物：
例句：
.We combat obstacles in order to get repose. (Henry Adams).Anobstruction makes passage or progress difficult:
.為了獲得歇息，我們與困難斗爭. （亨利·亞當(dāng)斯）。Obstruction 使通過或前進(jìn)變得困難：

例句：
a sandbar that is an obstruction to navigation.
成為航行的阻礙物的沙洲。

Bar andbarrier suggest an obstruction that confines or prevents exit or entry:
Bar 和barrier 暗示有限制或阻止出入的阻礙物：
例句：
.Tyranny may always enter—there is no charm, no bar against it—the only bar against it is a large resolute breed of men. (Walt Whitman).
.暴政可能總會(huì)產(chǎn)生——沒有咒語，沒有障礙——唯一阻礙它的是一群勇敢的人. （瓦特·惠特曼）。

例句：
.Literature is my Utopia . . . No barrier of the senses shuts me out from the sweet, gracious discourse of my book friends. (Helen Keller).
.文學(xué)是我的烏托邦…沒有任何感官的障礙能阻止我與書中朋友們的美妙、優(yōu)雅的交談. （海倫·凱勒）。

Block suggests obstruction that effectively prevents all passage:
Block 暗示是有效地堵塞所有通道的阻礙物：
例句：
The student failed the examination because of a mental block.
那個(gè)學(xué)生因腦子遲鈍而考試失敗。

Hindrance andimpediment are applied to something that interferes with or delays passage or progress:
Hindrance 和impediment 用于指干涉或使通道或進(jìn)步延緩：
例句：
.an attachment that would be a hindrance to him in any honorable career. (Thomas Hardy).
.一個(gè)對他來說，在任何引以為榮的事業(yè)中都將成為阻礙物的附屬品. （托馬斯·哈代）。

例句：
Overcrowded prisons are an impediment to the rehabilitation of criminals. Asnag is an unforeseen or hidden, often transitory obstacle:
過于擁擠的牢房對罪犯們精神重建造成阻礙。 Snag 是一個(gè)沒有被預(yù)見到的或隱蔽的，常為暫時(shí)或短暫的阻礙物：

例句：
The tourist ran up against a snag in the form of a lost passport.
這個(gè)觀光客碰到了一個(gè)麻煩，他丟失的護(hù)照