conscience n. 良心，道德心
例句：Ariel gave him back the money she's stolen for the sake of her conscience.
为了不受良心的谴责，艾莉尔把从他那偷来的钱还给他了。

conscientious adj. 尽责的
例句：We should be conscientious to our work.
我们应该对工作负责。

conscious adj. 有意识的，有知觉的，故意的，羞怯的
例句：I suddenly became conscious that someone was looking at me.
我突然意识到有人在看着我。

unconscious adj. 不省人事，未发觉的，无意的
例句：Tyler was quite unconscious of being remarkable among the local inhabitants.
泰勒并不知道自己在当地居民中间十分惹人注目。

consciousness n. 意识，知觉，自觉，觉悟，个人思想
例句：Carina had a consciousness that someone else was in the dark room.
卡瑞娜有一种感觉：漆黑的房间里还有别人。