英汉词典

1. 极重要的;关键的
    A critical time, factor, or situation is extremely important.

    e.g. The incident happened at a critical point in the campaign...
           该事件发生在竞选活动的关键时期。
    e.g. Environmentalists say a critical factor in the city's pollution is its population...
           环境保护主义者说造成该城市污染问题的一个关键因素是其人口数量。