1、critical

极重要的;关键的

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。

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。

(局势)严重的，有危险的

The German authorities are considering an airlift if the situation becomes critical.

如果局势变得危急，德国当局将考虑实施空运。

Its day-to-day finances are in a critical state.

其日常财务状况十分糟糕。

批评的;挑剔的

His report is highly critical of the trial judge.

他在报告中对主审法官有颇多批评。

a few dozen intellectuals who've been critical of the regime.

几十名一直批判该政权的知识分子

2、region

地区;地带;行政区域

Barcelona, capital of the autonomous region of Catalonia.

加泰罗尼亚自治区首府巴塞罗那

a remote mountain region.

边远山区

（首都以外的）各地区，外省

London and the regions.

伦敦和外省地区

Tax incentives would be used to attract firms to the regions, away from the South-East.

将采取税收优惠政策把公司吸引到东南部以外的各地区。