英汉词典

1. 可能性；可能
    If you say there is a possibility that something is the case or that something will happen, you mean that it might be the case or it might happen.

possibility的反义词

    e.g. We were not in the least worried about the possibility that sweets could rot the teeth...
           我们以前完全不担心吃糖果有可能会蛀牙。
    e.g. Tax on food has become a very real possibility.
           极有可能征收食物税。

2. （一种）可能；可能的事
    A possibility is one of several different things that could be done.

possibility的意思

    e.g. The government now owns a lot of our land — one possibility would be to compensate us with other property...
           政府现在占了我们的大量土地，一种可能是用其他地产来对我们作出补偿。
    e.g. There were several possibilities open to each manufacturer.
           每个制造商都可以有几种不同的选择。

3. 可能的事；能做到的事
    You can say 'It is not beyond the realms of possibility' or 'It is not beyond the bounds of possibility' when you are stating something that you believe is possibly true, but which other people might consider unlikely or impossible.

    e.g. It's not beyond the realms of possibility that the security services do bug important public figures.
           安全部门完全有可能窃听重要公众人物的谈话。