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| altitude change | |||
| altitude variation | |||
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高度变化 : 20 phrases in 9 subjects |
| Automobiles | 1 |
| Aviation | 5 |
| Bridge construction | 2 |
| Construction | 1 |
| Electronics | 2 |
| General | 3 |
| Hydroelectric power stations | 1 |
| Technology | 4 |
| Textile industry | 1 |
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