1. We had met on a previous occasion.
    我们上次见过面.

2. This festival is a cheerful occasion, for on this day, the dead are said to return to their homes and they are welcomed by the living.
    这个节日是个欢乐的日子，因为在这一天，据说死去的人要回到他们的家里来，活着的人则对他们表示欢迎。

3. You never go out, and this is a great occasion.
    你从来没出去过，这可是一个大好机会。

4. Sometimes he would be obliged to wait a long time, and on occasion the officers even unloaded his entire truck!
    有时还得等上老半天。间或海关官员还要他卸车检查。

5. Pupils of the school, old and new, will be sending him a present to mark the occasion.
    为了纪念这个日子，学校的学生--无论老同学还是新同学--将送他一件礼物。

6. Mendoza met Humphries in the ring on a later occasion and he lost for a second time.
    后来，门多萨与汉弗莱斯再次在拳击场上较量，门多萨又输了一场。

7. B.Despite the expense, you enjoy choosing gifts for any occasion.
    b.尽管要破费，你还是乐于为任何庆典盛会挑选礼物。

8. On another occasion, he invited a number of important critics to see his private collection of modern paintings.
    还有一次，他邀请一些著名评论家来参观他私人收藏的现代画。

9. Once he landed on the roof of a block of flats and on another occasion, he landed in a deserted car park.
    一次，他把飞机降落在了一栋公寓楼的屋顶上；还有一次，降落在了一个废弃的停车场上。

10. On this occasion, however, it had slowed down considerably.
    然而这一次它的速度慢多了。