1. 限制；控制
    The limitation of something is the act or process of controlling or reducing it.

    e.g. All the talk had been about the limitation of nuclear weapons.
           谈话都是围绕着限制核武器进行的。
    e.g. ...damage limitation.
           损失控制

2. 起限制作用的规则（或决定）
    A limitation on something is a rule or decision which prevents that thing from growing or extending beyond certain limits.

    e.g. ...a limitation on the tax deductions for people who make more than $100,000 a year...
           对年收入10万美元以上者的课税减免限制
    e.g. There is to be no limitation on the number of opposition parties.
           反对党的数量没有限制。

3. （能力的）局限
    If you talk about the limitations of someone or something, you mean that they can only do some things and not others, or cannot do something very well.

    e.g. I realized how possible it was to overcome your limitations, to achieve well beyond what you believe yourself capable of...
           我意识到，要超越自己的局限、取得超乎自己想象的成就是完全有可能的。
    e.g. Parents are too likely to blame schools for the educational limitations of their children.
           父母十之八九将子女的教育局限归咎于学校。

4. 限制性事实（或情形）
    A limitation is a fact or situation that allows only some actions and makes others impossible.

    e.g. This drug has one important limitation. Its effects only last six hours.
           这种药有一个严重缺陷：它的药力只能持续6个小时。
    e.g. ...an acute disc collapse in the spine, causing limitation of movement.
           导致行动不便的急性脊柱椎间盘萎陷