A test may obscure a role of factors.Logical formLearned from2 sentences. A cap may obscure by clouds of dust.Logical formLearned from2 sentences. (Dust storms) may obscure a surface.Logical formLearned from2 sentences. An issue may obscure by a victory.Logical formLearned from2 sentences. (Time series) may obscure by (survey error).Logical formLearned from2 sentences. Broken lines may obscure a disclosure of a design.Logical formLearned from2 sentences. Lines may obscure a design.Logical formLearned from2 sentences. A showing of a configuration of a design may obscure by a method.Logical formLearned from2 sentences. A meaning may obscure from view.Logical formLearned from2 sentences. Signals may obscure by (reaction wheels).Logical formLearned from2 sentences. Central regions of a galaxy may obscure by dust.Logical formLearned from2 sentences. Fluctuations may obscure observation of (surface structures).Logical formLearned from2 sentences. Objections of a number of individuals may obscure benefits.Logical formLearned from2 sentences. A question may obscure by presence.Logical formLearned from2 sentences. A band may obscure a central region.Logical formLearned from2 sentences.