unfold v.展开；摊开；打开；展现；呈现

8. available adj.

1) (指物) 可用的，可得到的

There is water available at the hut.

2）（指人）可会见的；可与之交谈的

The doctor is available now.

9. fancy adj. vt. &n.

1) adj. 奇特的；花样的；花哨的

I don't like making a fancy meal.

2）vt想象；假象

　　fancy +从句 想象

　　fancy (one's) doing sth. 想象...做...

　　fancy sb. to be... 想象某人

　　fancy sb. as 想象某人为...

3) n. 幻想，幻想出的东西

10. occasion n. 机会，时机；（某事发生的）时刻，时节

on that/this occasion 那时、这时

表达"有时"得表达：

on occasion at times from time to time now and then once in a while