an idea, a feeling or an opinion that you get about sb./sth., or that sb./sth. gives you; a mark made on the surface of sth. by pressing an object onto it
n. 印象; 感想; 印记
impression
adj. 时常发生的; 连续不断的
constant
adv. 不断地
constantly
happening a lot or all the time
all the time or often