Today is a historic occasion for our country.

　　今天是我國具有歷史意義的日子。

　　He used the occasion to announce further tax cuts.

　　他利用這個(gè)機(jī)會(huì)宣布再次減稅。

　　They issued a special set of stamps to mark the occasion.

　　他們特別發(fā)行了一套紀(jì)念郵票。

　　I've had no occasion to visit him recently.

　　我最近無緣去拜訪他。

　　Their wedding turned out to be quite an occasion.

　　他們的婚禮辦得相當(dāng)隆重。