Service spirit: Do earnestly, fast, and keep the pledge.

海威信服务精神：“认真、快、坚守承诺！”

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He would keep his pledge to the utmost of his power.

他将极力信守他的誓言。

《新英汉大辞典》

The Cancun agreements saw all nations pledge "urgent action" to keep temperatures from rising no more than two degrees Celsius (3.6 Fahrenheit) above pre-industrial levels.

坎昆协议中所有国家承诺参与“紧急行动”来阻止温度上升不高于工业化前水平两摄氏度(3.6华氏度)。

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During the campaign, Mr Toledo signed a pledge to keep the city's electricity firm in state hands.

ECONOMIST: The politics of privatisation

Already he has been dropping hints about not being able to keep the outgoing government's pledge to cut income tax by FFr12.5 billion a year over the next four years, not to mention a planned cut of some FFr25 billion this year.

ECONOMIST: France

Yet on the hardest question explaining how he would keep his pledge to lower tax rates across the board while avoiding adding to the deficit and at the same time avoiding regressive changes to the tax code that would hit the middle classes more than the wealthy Mr Romney again failed to provide clear answers.

ECONOMIST: Mitt Romney turns his fortunes around