(Equity investment) may be limited to passive investment.Logical formLearned from2 sentences. Passive investment can be in (index funds).Logical formLearned from2 sentences. A (smoking case) can be passive.Logical formLearned from2 sentences. (Surveillance techniques) can be passive.Logical formLearned from2 sentences. A (rubidium clock) can be passive.Logical formLearned from2 sentences. (Avoidance deficits) can be passive.Logical formLearned from2 sentences. An (avoidance component) can be passive.Logical formLearned from2 sentences. Chemicals can be passive.Logical formLearned from2 sentences. An and/or can be passive.Logical formLearned from2 sentences. Passive acoustics may undergo an understanding.Logical formLearned from2 sentences. Applicants can be passive.Logical formLearned from2 sentences. A (radio tag) can be passive.Logical formLearned from2 sentences. (Defense methods) can be passive.Logical formLearned from2 sentences. Passive smoke may increase (blood viscosity).Logical formLearned from2 sentences. (Monitor test chambers) can be passive.Logical formLearned from2 sentences.