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attention signal; approach signal | |||
warning signal; alarm signal | |||
warning sign |
signal avertisseur : 24 phrases in 8 subjects |
Communications | 12 |
Electronics | 1 |
Life sciences | 1 |
Natural resourses and wildlife conservation | 1 |
Natural sciences | 1 |
Nuclear physics | 1 |
Transport | 6 |
Радиоактивное излучение | 1 |