upbeat

他们展现出积极向上的精神面貌。

They show a positive and ___upbeat spirit.

在爵士乐中，钢琴手经常会在上拍（强拍）上加入装饰音。

In jazz, the pianist often adds embellishments on the ___upbeat.

尽管遇到挫折，他仍然保持乐观的态度。

Despite the setbacks, he remained ___upbeat about the situation.