词汇讲解：

1. invent vt.发明，创造
例句：He would invent fanciful names on the spot. 
他会当场想出些稀奇古怪的名子。 

2. display vt.显示; 陈列
例句：The women went to the garden party to display their summer toilet. 
妇女参加游园会以展示夏季服装。 

3. equipment n.设备，装备
例句：Electronic equipment quickly becomes obsolescent. 
电子设备淘汰得很快。

4. cradle n.摇篮; 发源地
例句：She swayed the baby's cradle with her foot until the baby went to sleep. 
她用一只脚摇晃着婴儿的摇篮,把婴儿摇睡了。 

5. cost vi.价钱为，花费
例句：First off, let' s see how much it' ll cost. 
首先, 让我们看看要花多少钱. 


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