constant

noun

1 a quantity that does not vary Synonym: constant quantity invariable

2 a number representing a quantity assumed to have a fixed value in a specified mathematical context

adj

1 steadfast in purpose or devotion or affection

2 uninterrupted in time and indefinitely long continuing Synonym: ceaseless incessant never-ending perpetual unceasing unremitting

3 unvarying in nature Synonym: changeless invariant unvarying ^[2] 

英[ˈkɒnstənt]美[ˈkɑːnstənt] ^[1] 

gas constant[熱]氣體常數 ; 通用氣體常數 ; 氣體常數 ;[熱]氣體常量

solar constant[天]太陽常數 ; 日輻射常數 ; 太陽能常數 ; 日照輻射常數

Faraday constant法拉第常數 ; 法拉第常量 ; 法拉第常量英語 ^[1] 

Because so much of what we do in chemistry does take place with constant temperature and pressure.

因為化學中我們所做的很多東西，都是在恆定的温度和壓強下進行的。

But that’s passive relaxation and due to the constant barrage of stimuli it’s not relaxation at all.

但那只是一種被動的放鬆，而且因為不斷的，密集的感官刺激，這完全就不是放鬆。

Do this throughout your day, and you will be in a constant state of relaxation and enjoyment.

將這件事貫穿到你一天的生活中，那你將會處在放鬆和享受的恆定狀態中。 ^[1] 

記憶技巧：con 加強 + stant 站，立 → 一直站着 → 不變的 ^[2] 

st, sta(n), stant, stat, stin= to stand 站, 立 ^[2]