(Flight operations) can be sustained.Logical formLearned from3 sentences. A top speed can be sustained.Logical formLearned from3 sentences. Clusters can be sustained.Logical formLearned from3 sentences. (Enemy air raids) can be sustained.Logical formLearned from3 sentences. (Fluid flows) can be sustained.Logical formLearned from3 sentences. A counter-attack can be sustained.Logical formLearned from3 sentences. A (turn performance) can be sustained.Logical formLearned from3 sentences. An inflammatory response can be sustained.Logical formLearned from3 sentences. A pulse can be sustained.Logical formLearned from3 sentences. An irony can be sustained.Logical formLearned from3 sentences. A hyperglycemia can be sustained.Logical formLearned from3 sentences. A (network performance level) can be sustained.Logical formLearned from3 sentences. Combinations can be sustained.Logical formLearned from3 sentences. A (research productivity) can be sustained.Logical formLearned from3 sentences. Explosive eruptions can be sustained.Logical formLearned from3 sentences.