| 11. | Romanticism has led them to energy-sapping humanitarian programs.
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| 12. | Squatter colonies also tap into the lines, sapping power.
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| 13. | Sapping involved extending the trench by digging away at the end face.
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| 14. | In sapping, the ground just gives away as water comes out.
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| 15. | Sapping is common in some desert areas in America's Southwest.
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| 16. | War weariness was sapping the Union's resolve.
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| 17. | But high interest rates throw the economy into recession, sapping political support.
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| 18. | "We're sapping our reservoir of common sense ."
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| 19. | All of this is sapping workers'confidence in their ability to retire.
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| 20. | It is sapping the morale of its most precious asset, its staff.
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