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| bruising; hard; herculean; laboring; labouring; operose; slavish; tiresome; toilsome | |||
| uphill | |||
| tough | |||
| labour some; taxing | |||
| laborious | |||
| strenuous | |||
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| strenuous | |||
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| robust | |||
| 费力的: 33 phrases in 10 subjects |
| Automobiles | 1 |
| Business | 2 |
| Commerce | 3 |
| Economy | 7 |
| General | 13 |
| Project management | 1 |
| Shipbuilding | 1 |
| Sports | 1 |
| Technology | 3 |
| Textile industry | 1 |
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