adj. 不断的,持续的;永恒的,始终如一的;坚定;忠实的;
n. [数]常数,常量;不变的事物;永恒值;
con始终+stant站立→始终站着→不变的
🗣️ 情景例句
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Snakes did not acquire their poison for use against man but for use against prey such as rats and mice, and the effects on these of viperine poison is almost immediate.