1.Karzai was close to rejecting a second round vote, changed his mind though after marathon talks with Democratic Senator John Kerry.

change mind改变主意

例句：What made you change your mind?
      什么使你改变了主意？

2.This hour, Secretary of State Hilary Clinton will be delivering what the administration calls a major address on the steps being taken to reduce nuclear weapons in the United States and abroad.

take steps采取措施

例句：They took steps to prevent the spread of influenza.
      他们采取措施阻止流感的传播。
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