constant

英 [ˈkɒnstənt]

美 [ˈkɑːnstənt]

adj.  连续发生的; 不断的; 重复的; 不变的; 固定的; 恒定的
n.  常数; 常量

复数：constants　

高考CET4CET6考研TOEFLIELTSGRETEM4TEM8BEC计算机

Oxford 3000 / Collins.4 / BNC.1915 / COCA.2386

牛津词典

adj.

• 连续发生的；不断的；重复的
  happening all the time or repeatedly
  1. constant interruptions
     无休止的干扰
  2. a constant stream of visitors all day
     整天络绎不绝的游客
  3. Babies need constant attention.
     婴儿一刻也离不开人。
  4. This entrance is in constant use.
     此入口经常使用。
• 不变的；固定的；恒定的
  that does not change
  1. travelling at a constant speed of 50 m.p.h.
     以每小时50英里的恒定速度行驶

noun

• 常数；常量
  a number or quantity that does not vary

柯林斯词典

• ADJ 持续不断的;重复的;一直存在的
  You useconstantto describe something that happens all the time or is always there.
  1. She suggests that women are under constant pressure to be abnormally thin...
     她暗示说女性总是处在保持身材异常瘦削的压力之下。
  2. Inflation is a constant threat...
     通货膨胀始终是个威胁。
  3. He has been her constant companion for the last four months.
     4个月来，他一直陪伴在她身边。
• ADJ-GRADED 恒定的;不变的
  If an amount or level isconstant, it stays the same over a particular period of time.
  1. The average speed of the winds remained constant.
     平均风速保持稳定。
• N-COUNT 恒定物;常数；常量；常项
  Aconstantis a thing or value that always stays the same.
  1. In the world of fashion it sometimes seems that the only constant is ceaseless change...
     在时装界，有时似乎唯一永恒不变的东西就是不断的变化。
  2. Two significant constants have been found in a number of research studies.
     若干研究已经发现了两个重要常量。

You can useconstant,continual, andcontinuousto describe things that happen or exist without stopping. You describe something asconstantwhen it happens all the time or never goes away.He was in constant pain. ...Eva's constant criticism.Continualis usually used to describe something that happens often over a period of time, especially something undesirable....his continual drinking. ...continual demands to cut costs.If something iscontinuous, it happens all the time without stopping, or seems to do so....days of continuous rain. ...a continuous background noise.
constant, continual 和 continuous 均可用来描述不断发生或一直存在的事物。constant 表示一直在发生或从未消失：He was in constant pain (他的疼痛一直没有消停)，Eva's constant criticism (伊娃没完没了的批评)。continual 通常用来形容一段时期内经常发生的事，尤其是令人讨厌的事：his continual drinking (他经常饮酒)，continual demands to cut costs (不断要求削减成本)。continuous 表示一直没有间断，或者貌似如此：days of continuous rain (淫雨霏霏的日子)，a continuous background noise (持续不断的背景噪音)。

英英释义

noun

• a quantity that does not vary
  Synonym:constant quantityinvariable
• a number representing a quantity assumed to have a fixed value in a specified mathematical context
  1. the velocity of light is a constant

adj

• steadfast in purpose or devotion or affection
  1. a man constant in adherence to his ideals
  2. a constant lover
  3. constant as the northern star
• uninterrupted in time and indefinitely long continuing
  1. the ceaseless thunder of surf
  2. in constant pain
  3. night and day we live with the incessant noise of the city
  4. the never-ending search for happiness
  5. the perpetual struggle to maintain standards in a democracy
  6. man's unceasing warfare with drought and isolation
  7. unremitting demands of hunger
  Synonym:ceaselessincessantnever-endingperpetualunceasingunremitting
• unvarying in nature
  1. maintained a constant temperature
  2. principles of unvarying validity
  Synonym:changelessinvariantunvarying

双语例句

• She could hear the constant rhythm of his breathing.
  她能听见他均匀而有节奏的呼吸。
• The brain requires a constant supply of oxygen
  大脑需要持续供氧。
• He would have a nurse in constant attendance day and night.
  会有一位护士日夜不间断地陪护着他。
• The constant repetition of violence has blunted the human response to it
  反复出现的暴力事件使人们的反应都变得麻木了。
• Constant wheelchair use will scuff almost any floor surface
  任何地板上经常有轮椅走动几乎都会有所磨损。
• Fred had been her constant companion for the last six years of her life
  在她生命的最后6年，弗莱德一直是她忠实的伴侣。
• The dynamic of the market demands constant change and adjustment
  市场要有活力，需要不断地改变和调整。
• Parts of the motor wore out because of constant usage
  发动机的一些部件因为经常使用而磨损了。
• Leaving aside the question of privacy, constant surveillance can be remarkably convenient.
  如果不去管隐私问题的话，实施不间断监视其实是非常便利的。
• An automatic voltage regulator ensured a constant output from the generator.
  一个自动电压调节器保证了发电机电流输出的稳定。