这名官员星期二在德黑兰告诉记者说，伊朗外交部正在办理签证手续，但是这一行程将取决于联合国安理会什么时候开会。

The official told reporters in Tehran Tuesday that Iran's foreign ministry is working on the visa but the trip depends on when the Security Council will meet.

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这一课程教授“金氏非暴力”——部分脱胎于马丁。 路德。 金的演讲。

The course teaches “Kingian non-violence”, which is partly based on the speeches of Martin Luther King.

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程国荣的弟弟和母亲于上周末接他回了家。

Cheng Guorong's brother and mother received him at home last weekend.

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And fixed versus variable speaks to whether you give a reward on a fixed schedule, every fifth time, or variable, sometimes on the third time, sometimes on the seventh time, and so on.

固定与变化则是相对于,你是否根据固定时程给予奖励而言的，每五次就给予奖励，或者是变化的，有时候在第三次上给予奖励，有时候则在第七次上给予奖励。

耶鲁公开课 - 心理学导论课程节选