Moon Tae-young, a ministry spokesman, says North Korea's actions on this occasion can be seen as having violated customary international law.

VOA: standard.2009.09.11

And from time to time, particularly in section discussion, you will have occasion to consider the ways in which sometimes in very contradictory ways--over the centuries.

在课堂讨论中，大家需要不断地去考虑,有时候甚至可能是持续几个世纪的完全相反的说法。

耶鲁公开课 - 旧约导论课程节选

You remember Sonnet Seven, "How Soon Hath Time," the sonnet that he had written on the sad occasion of his twenty-third birthday.

你们记得《十四行诗第七首》么，“时光飞逝,弥尔顿写给自己23岁生日那个悲伤的日子的十四行诗。

耶鲁公开课 - 弥尔顿课程节选

So, you've got to get used to the notion of what will be given in general and what is tailor-made to the occasion.

所以你们要习惯这些符号,有些是通用的,有些只适合于特定情形

耶鲁公开课 - 基础物理课程节选