| 1. | A zoo is a very costly establishment . 动物园是一个花费极大的机构。
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| 2. | The windows were draped with costly hangings . 窗上全挂着贵重的窗帘。
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| 3. | The election process is long and costly . 选举的过程冗长而且耗资巨大。
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| 4. | They bribed him with costly presents . 他们用贵重的礼物贿赂他。
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| 5. | This made books costly and rare . 这使书籍的价格昂贵而且稀少。
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| 6. | Opponents say the project will be too costly . 反对者们说这个项目代价太高。
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| 7. | Intervention by central banks became very costly . 由中央银行干预的代价很大。
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| 8. | His obese figure arrayed in costly apparel . 他的肥胖的身躯穿着一身考究的服装。
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| 9. | It was a costly mistake . 这是一个使我们吃了大亏的错误。
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| 10. | At least, the operation would have been very costly . 至少此一行动是需要较高代价的。
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