用“maintain the balance of”造句大全,maintain the balance of造句
Mankindhavebeentryingeverymeanstomaintainthebalanceofnature.Wewillmaintainthebalanceofworldpoweratallcosts.Allofusshouldbegratefultowhatnatureoffersus,obeythenaturallaws,maintainthebalanceofnatureandb...