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to phrases
hazardous operation
bridg.constr.
危险作业
busin.
危险性作业
econ.
危险的作业
tech.
危险
的
作业
hazardous operations
analysis
environ.
危险作业
分析
hazardous operations:
3 phrases
in 3 subjects
China
1
Environment
1
Technology
1
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