U.S.-Venezuelan relations since the populist Mr.Chavez was first elected in 1998 have been increasingly difficult, and he said in Moscow the new arms are to counter a U.S.-Colombian agreement last month under which U.S.forces will have access to several Colombian military bases.

VOA: standard.2009.09.15

We know our brain today can actually change through MRI studies since 1998.

自1998年后通过核磁共振研究我们知道大脑可以被改变。

哈佛公开课 - 幸福课课程节选

and the first you are going to be reading will be a chapter in a book I wrote 5 or 6 years ago I guess it's almost 6 years now since 1998 to came up.

首先你们要读的,是我5年或6年前写的一章,我想应该是至今6年了,从1998年算的话。

麻省理工公开课 - 电影哲学课程节选