观感的英文：
impressions
- Note down one's impressions of a city
记下对一座城市的观感 - But such an impression is not permanent and can be changed with a better frame
但这观感是一时的，可以重新改造。 - Removal techniques must be considered based on toxicity, aesthetics, and possible long term effects on the biosphere
必须根据毒性、观感及对生物圈的长期作用考虑去除措施。
n. 印象；感想；作用；影响；效果；痕迹；压痕
- lacking in impressiveness.
缺少令人难忘的特点。 - It is an impressive portrait.
这是一幅鲜明的人物肖像。 - impress a mark on [ upon ] a surface=impress a surface with a mark
在表面上打记号 - A stamp or seal meant to be impressed.
图章用来盖戳的图章或印章 - My impression is that they are satisfied with you explanation .
我的印象是,他们对你的解释很满意。