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hardening |
健化 : 30 phrases in 13 subjects |
Agriculture | 13 |
Desert science | 1 |
Earth sciences | 1 |
Ecology | 2 |
Heavy equipment vehicles | 2 |
Horticulture | 1 |
Name of organization | 1 |
Nautical | 1 |
Nursing | 2 |
Securities | 1 |
Sports | 1 |
Technology | 1 |
United Nations | 3 |