constant
释义
adj. 恒定的；不变的；持续的
n. 常数；常量
自然拼读
词态
复数：constants
例句
He kept in constant contact with his family while he was in Australia.
他在澳大利亚时一直和家人保持着联系。
And so, this is constant.
因此，这是个常数。
There was a constant stream of visitors to the house.
参观这幢房子的游客川流不息。
Amy lived in constant fear of being attacked.
埃米一直生活在害怕遭到袭击的恐惧之中。
travelling at a constant speed
以恒定速度行驶
词组
constant current
恒定电流
constant voltage
恒定电压；定压
constant state
恒定常态
constant velocity
匀速；等速度；恒速度
constant value
不变价值
constant volume
定容；恒定体积
constant temperature
恒温；定温；等温
constant temperature and humidity
恒温恒湿
constant frequency
恒定频率；固定频率
constant practice
时习，不断的练习
constant pressure
恒压
dielectric constant
介电常数；电容率
constant current source
恒流源
constant flow
恒流；定量流动；常廉流稳恒流；恒流定量消耗
constant speed
恒速；等速
time constant
时间常数，时间常量
rate constant
速率常数；速度常数
equilibrium constant
平衡常数
constant rate
恒速；固定比率；恒定流量
constant load
恒定负载
近义
adj.不变的；恒定的；经常的
permanent
steady
n.[数]常数；恒量
invariable
词根词缀点击查看constant词根词缀
真题
考纲分布
n. 持久不变
考纲释义
n. 持久不变
真题例句
"The only constant (不变) in life is change."Heraclitus said in about 500 B. C. That could be more true today.
赫拉克利特在公元前 500 年左右说，“生活中唯一不变的就是变化。”如今，这可能更真实。
[2020 山西卷 阅读理解]
考纲分布
adj. 不变的; 稳定的
考纲释义
adj. 不变的; 稳定的
真题例句
Constant interruptions.
不断的干扰。
[2021 全国乙卷 阅读理解]
In a wired world with constant global communication, we're all positioned to see flashes of genius wherever they appear.
在一个不断进行全球交流的有线世界中，我们都能看到天才的闪光，无论它们出现在哪里。
[2021 全国甲卷 阅读理解]
We found that in 30mph zones they struggled to keep at a constant speed.
我们发现在时速30英里的区域，他们很难保持恒速。
[2017 全国卷3 阅读理解]
备考派生词
constantly
adv. 不断地；时常地
1 ...we find that it is long years of will and constant effort that have brought about their success...
2011.12 CET4 写作题
2 ...more grown-up ways of doing the same things that are constant sources of joy: making art...
2015.12 CET4 阅读理解
3 ...depending on a constant flow from abroad to keep cars on the road and machines running...
2013.6 CET6 阅读理解
4 ...The result of constant muscle tension and stiffness of joints...
2013.6 CET4 阅读理解
5 ...People do it at the expense of everything that was a constant in their lives...
2010.6 CET4 阅读理解
6 ...By running constant deficits...
2012.12 CET6 阅读理解
7 ...can keep our core body temperatures pretty much constant regardless of what’s going on in the world around us...
2008.12 CET6 阅读理解
8 ...A constant supply of food should be given until the cold is over and spring has come...
2009.6 CET4 听力题
9 ...Are they exhausted by the consumer equivalent of the brain fatigue — information overload — that is caused by constant updates of devices and online media...
2012.12 CET4 阅读理解