After taking office in January, Barack Obama offered talks without precondition to Iran.

一月，奥巴马上任以后，提出与伊朗进行无先决条件会谈。

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Producing continuous casting slab without defect is precondition to hot delivery and charging continuous casting slab.

生产无缺陷的连铸坯是连铸坯热送、热装的前提条件。

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Perfect, beautiful singing vocal performance, singer can not do without a strong, solid vocal skills basic skills as a precondition.

完美、动听的声乐歌唱表现，离不开歌唱者深厚、扎实的发声技巧基本功为前提。

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We know that Barack Obama has, in the past, declared his willingness to meet with the leaders of Iran without precondition.

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In the spirit of that type of bold leadership, would you be willing to meet separately, without precondition, during the first year of your administration, in Washington or anywhere else, with the leaders of Iran, Syria, Venezuela, Cuba and North Korea, in order to bridge the gap that divides our countries?

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Under the circumstances, however, Mr. Bush had no choice but to eschew Secretary Powell's campaign to euchre Sharon into abandoning his precondition that there be at least seven days without violence before committing to a renewed cease-fire with the Palestinians.

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