有时；偶尔

有时， 间或

to occasion───因时制宜

occasion───n.时机，机会；场合；理由；vt.引起，惹起

gala occasion───庆功会

have occasion───有机会

take occasion───抓住机会；利用机会

gala occasions───盛会

moccasin───n.软帮鞋；[服装]鹿皮鞋；一种生长在北美的大毒蛇

occasions───n.场合；机会（occasion的复数）；理由；v.致使；引起（occasion的第三人称单数）

sense of occasion───场合意念；见机行事的直觉

He has been known on occasion to lose his temper.───都知道他有时会发脾气。

Everyone should indulge in fantasy on occasion.───每个人都应偶尔沉浸在想像之中.

She visits the city on occasion.───她有时到城里去.

He visits the city on occasion.───他偶尔访问这座城市.

On occasion, convulsions may be associated with HC.───偶而,猪瘟可伴发痉挛.

He was gifted, on occasion, with a gentle raillery, which almost always concealed a serious meaning.───他一有机会, 总爱说一些温和的讥诮言词, 但几乎每次都含着严正的意义.

Swift had been as plain and as satirical, on occasion.───斯威夫特的文笔有时同样朴实,同样喜欢讽刺.

It is, however, necessary on occasion to work outwith these hours.───然而，有时候在这些时点之外也需要工作。

In fact the adjective is becoming a real necessity on occasion.───事实上,这个形容词有时确实是必不可少的.

Nobody is perfect, and everyone acts thoughtlessly on occasion.───人无完人，谁都难保不偶尔疏忽一次。

She had on occasion praised him extravagantly.───她有时曾过分地表扬他。

He translated not only from the French but also, on occasion, from the Polish.───他不仅做法文翻译，有时也做些波兰语翻译。

however, necessary on occasion to work outwith these hours.───然而，有时有必要在这些时间之外工作。

On occasion he went to London to spend the weekend.───有时他去伦敦渡周末.

He treated them seriously and, on occasion, entertained them hilariously.───他对待他们严肃认真，偶尔又逗得他们捧腹不已。

( By this time, Mr. Lorry dared to be pleasant with her, on occasion. )───( 这时罗瑞先生已经敢于偶然跟她开开玩笑了 )

You have on occasion surprised people.───你有时使人们感到诧异.

He forgot to do homework on occasion.───有时他忘了做家庭作业.

He was gifted, on occasion, with a gentle raillery, which almost always concealed a serious meaning.