1、critical

極重要的;關鍵的

The incident happened at a critical point in the campaign.

該事件發生在競選活動的關鍵時期。

Environmentalists say a critical factor in the city's pollution is its population.

環境保護主義者說造成該城市污染問題的一個關鍵因素是其人口數量。

(局勢)嚴重的，有危險的

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

如果局勢變得危急，德國當局將考慮實施空運。

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

其日常財務狀況十分糟糕。

批評的;挑剔的

His report is highly critical of the trial judge.

他在報告中對主審法官有頗多批評。

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

幾十名一直批判該政權的知識分子

2、precious

寶貴的；珍貴的；貴重的

After four months in foreign parts, every hour at home was precious.

在國外呆了4個月后，在家的每一刻都是寶貴的。

A family break allows you to spend precious time together.

家庭度假會讓你們一起度過寶貴的時光。

值得珍視的；可貴的；重要的

Her family's support is particularly precious to Josie.

家庭的支持對喬茜來說尤為可貴。

Mary left her most precious possession a small bookcase to her niece.

瑪麗把她最珍視的財產—一個小書架，留給了她的侄女。