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单词 constant
释义

con·stant

adjective
 OPAL W
/ˈkɒnstənt/
/ˈkɑːnstənt/
  1.  
    [usually before noun] happening all the time or repeatedly连续发生的;不断的;重复的
    • There were constant interruptions.干扰不断。
    • a constant stream of visitors all day整天络绎不绝的游客
    • The ruined buildings serve as a constant reminder of the war.毁坏的建筑总教人想起那场战争。
    • The constant threat of violence from the other inmates was hard to deal with.其他囚犯持续不断的暴力威胁令人难以应对。
    • Doctors are under constant pressure to treat more and more patients.医生面临着治疗越来越多患者的持续压力。
    • Babies need constant attention.婴儿一刻也离不开人。
    • This entrance is in constant use.此入口经常使用。
    Extra Examples
    • He is very ill and needs constant attention.他病得很重,需要寸刻不离的照顾。
    • Her constant chatter was beginning to annoy him.她无休止的唠叨开始使他心烦。
    • Her daughter is a constant source of worry to her.她的女儿总是让她忧心。
    • I have been in constant pain since the accident.事故发生后我一直处于疼痛之中。
    • It was a constant battle to avoid bankruptcy.这是一场避免破产的持续斗争。
    • She still has constant nightmares.她仍然经常做噩梦。
    • The business world is one of constant change.商业世界是一个不断变化的世界。
    • The old buildings are in constant need of repair.老建筑需要不断维修。
    • The vehicles were in constant use.这些车辆一直在使用。
    Oxford Collocations Dictionaryverbs
    • be
    • remain
    • stay
    adverb
    • fairly
    • reasonably
    • relatively
    preposition
    • across
    • over
  2.  
    that does not change 不变的;固定的;恒定的
    • The car was travelling at a constant speed of 50 mph.汽车以每小时 50 英里的恒定速度行驶。
    • The samples need to be stored at a constant temperature.这些样本需要在恒温下保存。
    • Crime levels remain constant.犯罪率保持平稳。
    • Ross was his most constant and loyal friend.罗斯是他最恒久、最忠实的朋友。
    Extra Examples
    • All variables except one must be held constant.除了一个变量以外,其他所有变量必须保持恒定。
    • Prices have remained constant over this period.价格在这一时期保持不变。
    • The level of unemployment remains fairly constant at around 10%.失业率一直维持在 10% 左右,比较稳定。
    • The temperature must be kept constant.温度必须保持不变。
    • These electrical properties are virtually constant across a wide range of temperatures.这些电性能在很大温度范围内几乎保持不变。
    • These figures were virtually constant across the 1991 and 2001 censuses.这些数字在1991年和2001年的人口普查中实质上没有变化。
    Oxford Collocations Dictionaryverbs
    • be
    • remain
    • stay
    adverb
    • fairly
    • reasonably
    • relatively
    preposition
    • across
    • over
  3. Word Originlate Middle English (in the sense ‘staying resolute or faithful’): from Old French, from Latin constant- ‘standing firm’, from the verb constare, from con- ‘with’ + stare ‘stand’. The noun senses date from the mid 19th cent.

con·stant

noun
OPAL W
/ˈkɒnstənt/
/ˈkɑːnstənt/
(specialist)
  1. a number or quantity that does not vary常数;常量
    • fundamental physical constants基本物理常数
    opposite variableTopics Scientific researchc2
    Word Originlate Middle English (in the sense ‘staying resolute or faithful’): from Old French, from Latin constant- ‘standing firm’, from the verb constare, from con- ‘with’ + stare ‘stand’. The noun senses date from the mid 19th cent.
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更新时间:2026/2/20 12:12:24