mainspring sentence examples

• Mainspring of positive social change.
• The rotor did not move around enough to wind the mainspring sufficiently.
• Mainspring housing on the 1911 pistol.
• Mainsprings of growth identified by the new growth economics.
• Put to work in 1824 at a blacking factory, a humiliation that was to provide a mainspring for his subsequent ambition.
• Mainspring of action.
• Mainspring of progress is the mighty fact that millions of people seek battle and aspire.

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