Therefore, to guarantee the machine 's operating safely and economically is to be an important problem, which should be faced to and handled by corporations and power-producing enterprises.

因此，保证这些大型旋转机械安全、经济地运行，成为企业和电力生产部门面对的重大课题。

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But in Buenos Aires the devaluation has reawakened fears that Mercosur is failing to guarantee problem-free access to Brazil's huge market.

ECONOMIST: Mercosur’s malaise | The

In Ireland the problem is dodgy banks and the government's hasty decision in September 2008 to guarantee all their liabilities.

ECONOMIST: The euro crisis