millennium
千周年纪念日；千禧年
How did you celebrate the millennium?
你们是如何欢庆千禧年的？

meaningful
严肃的；重要的；重大的
a meaningful relationship / discussion / experience
重要的关系/讨论/经历


focus
focus for sth
focus on sth
中心点(指人或事物)
It was the main focus of attention at the meeting.
这是会议上关注的主要焦点。
His comments provided a focus for debate.
他的评论提供了辩论的重点。

considering
考虑到；就…而言；鉴于
She's very active, considering her age.
就她的年龄来说,她是十分活跃的。
Considering he's only just started, he knows quite a lot about it.
鉴于他才刚刚开始,他懂得的已经不少了。

来源:可可英语 http://www.kekenet.com/video/201710/526835.shtml