记忆方法
双解例句
小知识
Think of something or someone that does not change as constant. A classmate's constant drumming on the table with his fingers could be a constant source of annoyance.
Constant derives from Latin verb meaning “to stand with,” so something constant is continually standing with you and not wavering. You may be thankful for the constant companionship of your dog but not necessarily for your teacher's constant homework assignments. In math and science, a constant is a number that is fixed and known, unlike a variable which changes with the context. That idea crosses over to real life. If a friend is a constant in your life, that means they have always been with you and there for you.
实用短语
常用短语
单词用法
continual：强调重复或持续发生，但连续之间允许有间断。
continuous：语意最强，强调在时间和空间上没有间断。
successive：强调事物一个接一个地发生，无间断。
constant：多指习惯性的重复和不变的持续。
persistent：普通用词，可指不懈的努力，也可指任何连续不断或重复出现的事物。
constant pressure恒压
dielectric constant介电常数；电容率
constant current恒定电流
词根词缀
词根: stant
=stand,表示”站,立”
adj.
constant 固定的,持续的,忠实的con全部,始终+stant站,立→始终站着→固定的
distant 远的;遥远的;疏远的;不亲近的dis分开+stant站,立→分开站着→有距离的
instant 立即的;紧迫的;[食品]速溶的in内+stant站,立→站在里面的东西,表示就在面前→紧迫的
instantaneous 瞬间的,即刻的instant紧迫的+aneous……的→马上发生的→同时发生的
substantial 实质的;相当的;显著的;坚固的;富裕的substant=substance物质;实质+ial……的→实质的,显著的
substantive 独立存在的,直接的,实质的substant=substance物质;实质+ive……的→adj.独立存在的,直接的,实质的
n.
constant 常数,恒量con全部,始终+stant站,立→始终站着→固定的
instant 瞬间,时刻in内+stant站,立→站在里面的东西,表示就在面前→紧迫的
v.
substantiate 证实,确证substant=substance物质;实质+iate表动词→把[理论]物质化→证实
同义词辨析
这些形容词均有”连续的，不断的”之意。
- continual： 强调重复或持续发生，但连续之间允许有间断。
- continuous： 语意最强，强调在时间和空间上没有间断。
- successive： 强调事物一个接一个地发生，无间断。
- constant： 多指习惯性的重复和不变的持续。
- persistent： 普通用词，可指不懈的努力，也可指任何连续不断或重复出现的事物。
同义词
regular / unchanging / even / steady / uniform / stable / fast / permanent / same / unalterable / changeless / enduring / unchangeable / incommutable / abiding / immutable / invariable / solid / fixed / firm
unbending / persevering / obstinate / grim / staunch / unwavering / unshrinking / stubborn / serious / true-hearted / determined / dogged / uncompromising / indefatigable / strong-willed / tenacious / undeviating / unyielding / resolute / tried-and-true / loyal / unflagging / inflexible / untiring / persistent / faithful / steadfast / indomitable / devoted / unwearied
interminable / recurrent / nonstop / uninterrupted / relentless / unceasing / perpetual / unremitting / never-ending / continuous / everlasting / unending / frequent / persistent / continual / incessant / unbroken / eternal / ceaseless / endless / habitual
反义词
changeable / mutable / variable / inconstant