He was presented with the watch on the occasion of his retirement.

The flight delay was occasioned by the need for a further security check.

这次航班的延误是由于必须做进一步的安全检查。

They marked the occasion (= celebrated it) with an open-air concert.

他们举办露天音乐会来庆祝这个特别的时刻。

He spent five years in Paris, with occasional visits to Italy.

他在巴黎度过了五年，偶尔去意大利看看。

I enjoy the occasional glass of wine.

我喜欢偶尔喝一杯葡萄酒。

This thing isn't occasional.

这件事不是偶然的.

He made occasional visits to London.

他有时候会去伦敦。

There may be the occasional criticism but it's clear there is no raging debate right now.

可能偶尔会有批评，但现在显然没有出现激烈的辩论。

They had an occasional coffee together after shopping.

他们偶尔会在购物后一起喝杯咖啡。

He only has occasional use of a car.

他只是偶尔用一下汽车。

The occasional failed project or neglected opportunity does not jeopardized overall progress.

偶然失败的项目或失误的机会并没有影响总的进展.

You can even snatch a few hours off, and perhaps negotiate the occasional night off too.

你甚至可以抽空休息几小时，商量一下的话没准还能偶尔不用上晚班。

an occasional smoker (= a person who smokes, but not often)

偶尔吸烟的人

That sort of thing is quite occasional and not regular.

那种事十分偶然,没有规律.

I've had occasional mild headaches all my life...

间或发作的轻微头疼困扰了我一辈子。

What fears their absence might have occasioned already!

他们的失踪究竟要造成什么样的后果呀!

This may have been occasioned by the early use of faulty analytical techniques.

这可能由于早期不完善的分析技术所造成的.

Pity is occasioned by undeserved misfortune and fear by the suffering of one like ourselves.

只有当剧中人物像我们一样受了不应受的苦,经历了恐惧和痛苦,人们才会同情、恐惧.

His rude behavior occasioned a quarrel.

他的无礼行为引起了一场争吵.

Your behaviour has occasioned us a lot of trouble.

你的行为给我们引起很多麻烦.

Stephen's behaviour occasioned his parents much anxiety.

斯蒂芬的行为使其父母十分担心.