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| 充电与放电 | |||
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charge and discharge : 42 phrases in 14 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Business | 10 |
| Chemistry | 1 |
| Economy | 2 |
| Electronics | 1 |
| Finances | 7 |
| Hydroelectric power stations | 1 |
| International trade | 3 |
| Metallurgy | 1 |
| Securities | 2 |
| Shipbuilding | 2 |
| Space | 3 |
| Technology | 7 |
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