奥巴马：伊核问题外交空间正缩小

report on报道…, 就…作报告
例句：Jim has been sent to Iran to report on the situation there.
吉姆已被派往伊朗报道那里的局势。

2. Iran says its nuclear program is for peaceful purposes and it is not giving up any of its right in moving to return to talks with permanent members of the U.N. Security Council and Germany - a group known as the P5+1.

give up放弃
例句：She will give up this journey.
她将放弃这次旅行。
known as被认为是，被称为
例句：Radio, television, newspapers and magazines are known as the mass media.
广播、电视、报纸和杂志被称为大众传媒。

3. And foreign policy analyst Malou Innocent says that has helped bring Iran back to nuclear talks.

bring back把…带回来，拿回来；使(某人)回来；归还
例句：All library books must be brought back before June 30.
6月30日之前，所有从图书馆借出的书必须归还。

4. “So there has been an increase in the rhetoric on Khamenei's part, on the Ayatollah's part, to engage with the P5+1 and also to begin opening up the Iranian nuclear program," she said.

engage with与……交战；忙于，从事
例句：At present I'm engaged with the revision of my dictionary.
目前我正忙于修订我那部词典。
open up变宽; 展现; 揭示
例句：The chance meeting with the president opened up new possibilities for him.
与总统邂逅提供给他新的机会。