contract Pausable is Ownable 
{
  event Pause();
  event Unpause();

  bool public paused = false;


  /**
   * @dev Modifier to make a function callable only when the contract is not paused.
   */
  modifier whenNotPaused() {
    require(!paused);
    _;
  }

  /**
   * @dev Modifier to make a function callable only when the contract is paused.
   */
  modifier whenPaused() {
    require(paused);
    _;
  }

  /**
   * @dev called by the owner to pause, triggers stopped state
   */
  function pause() onlyOwner whenNotPaused public 
  {
    paused = true;
    emit Pause();
  }

  /**
   * @dev called by the owner to unpause, returns to normal state
   */
  function unpause() onlyOwner whenPaused public
  {
    paused = false;
    emit Unpause();
  }

}
/**
 * 合约管理员可以在紧急情况下暂停合约，停止转账行为
 * @title Pausable
 * @dev Base contract which allows children to implement an emergency stop mechanism.
 */
function unpause() onlyOwner whenPaused public
  {
    paused = false;
    emit Unpause();
  }
/**
 * @dev called by the owner to unpause, returns to normal state
 */