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| serious; grave | |||
| serio: 14 phrases in 10 subjects |
| Agriculture | 1 |
| General | 2 |
| Health care | 2 |
| Information technology | 1 |
| Law | 2 |
| Materials science | 1 |
| Mathematics | 2 |
| Patents | 1 |
| Pharmacy and pharmacology | 1 |
| Transport | 1 |
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