hinder，obstruct，obstacle，obstruction，balk；
[例句] 物质和意识形态上的障碍在东欧已不复存在。 Physical and ideological barriers had come down in Eastern Europe.
[例句] 我意识到我不得不克服语言障碍。 I realized I had to surmount the language barrier.
hitch，breakdown，stoppage，fault，conk out ；
[例句] 还有几次事故主要是起飞时引擎出现故障造成的。 There were also several accidents mainly caused by engine failures on take-off.
[例句] 飞机由于发生电力故障而作了临时降落。 The aircraft made an unscheduled landing after developing an electrical fault.
protective screen，parclose，[非] scherm，barrier ；
[例句] 人体的免疫系统是抵御疾病的主要屏障。 The immune system is our main defence against disease.
[例句] 这些人造屏障将会确保提供高度的保护。 These man-made barriers will ensure a very high degree of protection.
[医] cataract，[拉] cataracta，pearl eye ；
[例句] 白内障是一种影响晶状体透明性的疾病。 Cataracts is a condition that affects the transparency of the lenses.
[例句] 他是一位曾经动过白内障手术的老人. He is an elderly gentleman who had had a cataract operation.
ensure，guarantee，safeguard ；
roadblock，road-block，[电影]Barricade；
[例句] 该市警察设置了路障以检查过往车辆。 The city police set up roadblocks to check passing vehicles.
[例句] 一伙暴徒捣毁了警察设置的路障冲进法庭。 An unruly mob broke down police barricades and stormed the courtroom.
be [go] out of order，malfunctioning，syndrome，have a screw loose ；
[例句] 维克斯机枪有时会出故障。 Vickers machine-guns could be temperamental.
[例句] 他们的车子出故障了。 Their car broke down.
[医] caligo lentis，cataract，cataracta ；
[例句] 结论小切口非超乳白内障摘出术在外伤性白内障手术中是一种简便、安全 、 有效的方法. Conclusions Small incision cataract extraction is safe, effective and convenient for traumatic cataract.
[例句] 研究中的病人罹患莱伯氏先天性黑内障(Leber'scongenitalamaurosis). Patients in the study suffered from a condition called Leber's congenital amaurosis.
[医] coffer dam，coffer-dam，dam，rubber dam ；
[例句] 橡皮障可以真正使得病人放松,很多病人甚至能入睡. Rubber dam allows patients to truly relax and many fall asleep in my chair.
blindfold ；
[例句] 医生除去了他眼中的障眼物. The doctor removed the scale from his eyes.
barricade ；
[例句] 士兵在路上设路障. The soldiers make a barricade across the road.
airbond ；
[医] （青光眼） Cataracta viridis，glaucomatous cataract，glaucoma，glaucosis ；
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