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
Did you sleep soundly last night.
你昨晚睡得好吗?
Prompt delivery would be necessary as we have a fast turnover in this trade. We would therefore need your assurance that you could meet all delivery dates.