他们的山区之旅被证明是非常多事的，既有壮丽的景色，也遇到了一些小麻烦。

Their journey through the mountains proved to be a very ___eventful one, with stunning views and a few minor mishaps.

我三十岁的生日庆祝活动尤其令人难忘且充满精彩。

The celebration of my 30th birthday was particularly memorable and ___eventful.

谈判漫长而多变，取得了数次意想不到的突破。

The negotiations were long and ___eventful, with several unexpected breakthroughs.