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| imagem de fundo | |||
| tela de fundo | |||
| apoio de retaguarda; back-end | |||
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arrière-plan : 44 phrases in 6 subjects |
| Communications | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| Information technology | 15 |
| Microsoft | 25 |
| Transport | 1 |
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