Richard Pipes,a leading authority on Russia and a former anti-Soviet crusader who served in the Reagan administration, also stresses Mr.Gorbachev's pivotal role.

VOA: standard.2009.11.03

It was probably the pivotal point of our friendship when he realized I had actually spent some hours thinking about him and his troubles and he was trying to place that in his tremendously involved and tormented mental categories.

这或许是我们之间友谊的关键时刻,他知道我的确用了许多时间考虑他和他的困境,在他陷入极其复杂的痛苦的精神危机时,他更是急于想了解这一点。

耶鲁公开课 - 1945年后的美国小说课程节选

president has done so. He told the council that the United Nations has a "pivotal role to play" in preventing a nuclear crisis.

VOA: standard.2009.09.24

Results from Baghdad, a pivotal area, have not yet been announced.

VOA: standard.2010.03.12

"But above all,your visit at this pivotal moment in history speaks to the opportunity before us to build the relationship between our nations born in the last century into one of the defining partnerships of the 21st century,"

VOA: standard.2009.11.25