1. 现实;事实
    You use reality to refer to real things or the real nature of things rather than imagined, invented, or theoretical ideas.

    e.g. Fiction and reality were increasingly blurred...
           虚构和现实越来越难以区分了。
    e.g. Psychiatrists become too caught up in their theories to deal adequately with reality.
           精神病专家太纠结于理论，无法很好地处理现实问题。

2. （尤指不愉快的或困难的）真实情况，实际情形
    The reality of a situation is the truth about it, especially when it is unpleasant or difficult to deal with.

    e.g. ...the harsh reality of top international competition...
           高层次的国际竞争的严酷现实
    e.g. Other psychoanalysts do accept the reality of child sexual abuse.
           其他心理分析师确实接受了儿童性侵犯的现实。

3. 现实存在;真实发生的事
    You say that something has become a reality when it actually exists or is actually happening.

    e.g. ...the whole procedure that made this book become a reality...
           本书成书的整个过程
    e.g. The reality is that they are poor.
           现状是他们很贫穷。

4. 事实上；实际上
    You can use in reality to introduce a statement about the real nature of something, when it contrasts with something incorrect that has just been described.

    e.g. He came across as streetwise, but in reality he was not.
           他给人的印象是很适应都市生活，但实际上并非如此。