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51. | occupational medicine |
| 职业性医学 |
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52. | professional beggar |
| 职业乞丐 |
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53. | professional photographer |
| 职业摄影师 |
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54. | Occupational orientation |
| 职业性向 |
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55. | professional student |
| 职业学生 |
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56. | occupational identity |
| 职业身份 |
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57. | occupation statistics |
| 职业统计 |
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58. | occupational noise |
| 职业噪音 |
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59. | occupational division of labour |
| 职业分工 |
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60. | occupational statistics |
| 职业统计学 |
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