(Satellite instruments) can be passive.Logical formLearned from2 sentences. A (sample array) can be passive.Logical formLearned from2 sentences. Nationalists can be passive.Logical formLearned from2 sentences. Crossovers can be passive.Logical formLearned from2 sentences. Alves can be passive.Logical formLearned from2 sentences. A (currency overlay) can be passive.Logical formLearned from2 sentences. A network may consist of some passive elements.Logical formLearned from2 sentences. (Fire protection means) can be passive.Logical formLearned from2 sentences. A (night vision equipment) can be passive.Logical formLearned from2 sentences. A (homing system) can be passive.Logical formLearned from2 sentences. A voice may be described as a passive voice of intransitive verbs.Logical formLearned from2 sentences. A (force field) can be passive.Logical formLearned from2 sentences. Passive monitoring may differ from synthetic monitoring.Logical formLearned from2 sentences. Passive monitoring can be helpful in troubleshooting (performance problems).Logical formLearned from2 sentences. A survey can be passive.Logical formLearned from2 sentences.