1. 罪;罪过;罪孽
    Sin or a sin is an action or type of behaviour which is believed to break the laws of God.

    e.g. The Vatican's teaching on abortion is clear: it is a sin...
           罗马教廷对堕胎的教义非常清楚：这是罪过。
    e.g. Was it the sin of pride to have believed too much in themselves?
           他们过分自信，这是否犯了骄纵之罪？

2. see also: cardinal sin;mortal sin

3. 犯戒律;犯过失
    If you sin, you do something that is believed to break the laws of God.

    e.g. The Spanish Inquisition charged him with sinning against God and man...
           西班牙宗教法庭指控他亵渎上帝和人类。
    e.g. You have sinned and must repent your ways.
           你犯了罪，必须为你的所作所为作出忏悔。

4. 罪恶;恶行;不道德的行为
    A sin is any action or behaviour that people disapprove of or consider morally wrong.

    e.g. ...the sin of arrogant hard-heartedness...
           傲慢无情的恶行
    e.g. The ultimate sin was not infidelity, but public mention which led to scandal.
           最大的罪过不是通奸而是公众议论，是它导致了丑闻的发生。

5. 同居
    If you say that a man and a woman are living in sin, you mean that they are living together as a couple although they are not married.

    e.g. She was living in sin with her boyfriend.
           她和男友同居。

6. a multitude of sins -> see multitude