A (learning curve) can be steep that something-is-the-case.Logical formLearned from7 sentences. A city can be steep.Logical formLearned from7 sentences. A (pressure gradient) can be steep.Logical formLearned from7 sentences. (Rock formations) can be steep.Logical formLearned from7 sentences. Tributaries can be steep.Logical formLearned from7 sentences. Volcanoes can be steep.Logical formLearned from7 sentences. An improvement can be steep.Logical formLearned from7 sentences. A continental slope can be steep.Logical formLearned from7 sentences. (Cliff walls) can be steep.Logical formLearned from7 sentences. A duty can be steep.Logical formLearned from7 sentences. A mud can be steep.Logical formLearned from7 sentences. A rate can be steep.Logical formLearned from7 sentences. A cornea can be steep.Logical formLearned from7 sentences. A trough can be steep.Logical formLearned from7 sentences. (Mountain walls) can be steep.Logical formLearned from7 sentences.