这是一个令人难忘的音乐会。

It was a ___memorable concert.

那次旅行非常难忘，我们看到了最美的日落。

That trip was truly ___memorable as we witnessed the most beautiful sunset.

那场演出令人难忘，因为它的灯光效果太惊艳了。

The show was ___memorable because of its stunning lighting effects.