名詞 conscience:

1. motivation deriving logically from ethical or moral principles that govern a person's thoughts and actions
   同義詞：scruples, moral sense, sense of right and wrong
2. conformity to one's own sense of right conduct
3. a feeling of shame when you do something immoral

1. How can he reconcile it to his conscience?
   他怎能問(wèn)心無(wú)愧呢？
2. She was afflicted with conscience.
   她受良心責(zé)備。
3. She paid the repair bill as a salve to her conscience.
   她付了維修費(fèi)以減輕內(nèi)疚感。
4. The thief's conscience smote him.
   那個(gè)賊突然良心發(fā)現(xiàn)。
5. She gave him back the money she'd stolen for the sake of her conscience.
   為了不受良心的譴責(zé)，她把從他那偷來(lái)的錢(qián)還給他了。

con.science

n.（名詞）

The awareness of a moral or ethical aspect to one`s conduct together with the urge to prefer right over wrong:
良心：對(duì)鞭策人行善而非作惡的本能行為在倫理或道德上的意識(shí)：
例句：
Let your conscience be your guide.
讓你的良心指引你

A source of moral or ethical judgment or pronouncement:
是非之心：倫理或道德判斷或聲明的根據(jù)：
例句：
a document that serves as the nation`s conscience.
一份表明民族道德準(zhǔn)則的文件

Conformity to one`s own sense of right conduct:
正義之心：對(duì)自己感覺(jué)正確的行為的堅(jiān)持：
例句：
a person of unflagging conscience.
正義感堅(jiān)定的人

The part of the superego in psychoanalysis that judges the ethical nature of one`s actions and thoughts and then transmits such determinations to the ego for consideration.
超我之心：心理學(xué)上用來(lái)判斷某人行為和思想的道德標(biāo)準(zhǔn)的超我部分，之后將判斷結(jié)果傳送給自我進(jìn)行考慮
Obsolete Consciousness.
【廢語(yǔ)】 意識(shí)

<習(xí)慣用語(yǔ)>in (all good) conscience
In all truth or fairness.
公平：憑事實(shí)或公正
來(lái)源：
Middle English
中古英語(yǔ)
from Old French
源自 古法語(yǔ)
from Latin cônscientia
源自 拉丁語(yǔ) cônscientia
from cônsciôns cônscient- [present participle of] cônscore [to be conscious of]
源自 cônsciôns cônscient- [] cônscore的現(xiàn)在分詞 [意識(shí)到…]
com- [intensive pref.] * see com-
com- [前綴，表加強(qiáng)詞義] *參見(jiàn) com-
score [to know] * see skei-
score [知道] *參見(jiàn) skei-

【引伸】
con.scienceless
adj.（形容詞）