| 1. | Keys are available on application to the principal . |
| 向校长申请就夕得到钥匙。
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| 2. | He was one of the principal architects of the revolution. |
| 他是那次革命的一位发动者。
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| 3. | Swahili is the principal lingua franca in East Africa. |
| 东非的主要交际语是斯瓦希里语。
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| 4. | The Danube is one of the principal rivers of Europe. |
| 多瑙河是欧洲的主要河流之一。
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| 5. | The principal aim of the policy is to bring peace to the area. |
| 该政策的主要目的是为给这一地区带来和平。
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| 6. | The low salary is her principal reason for leaving the job. |
| 工资太低是她辞去那工作的最重要的原因。
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| 7. | She's been downgraded (from principal ) to deputy. |
| 她已(从校长)降为副校长。
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| 8. | Her principal objective was international fame as a scientist. |
| 她的主要目标是当个有国际声誉的科学家。
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| 9. | Beet sugar is one of the chief [leading, main, principal ] exports of Germany. |
| 甜菜糖是德国的主要出口商品之一。
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| 10. | Please report yourself to the principal . |
| 请到校长那儿去一下。
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