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major accident
environ.	acidentes graves
health., environ.	acidente grave
major accident An unexpected occurrence, failure or loss beyond normal or specified levels with the potential for harming human life, property or the environment
environ.	acidentes graves

major accident: 17 phrases in 9 subjects

Earth sciences	1
Environment	4
General	3
Industry	1
Information technology	2
Insurance	1
Law	1
Materials science	1
Social science	3