1. Countertenors are male singers who sing in a high, falsetto voice.
男高音歌手是男性歌手，以高音假声演唱。

2. The countertenors in the choir added a beautiful, ethereal quality to the music.
合唱团中的男高音歌手为音乐增添了优美而空灵的质感。

3. Many famous operas feature roles for countertenors, showcasing their unique vocal abilities.
许多著名的歌剧中都有专门为男高音歌手设计的角色，展示他们独特的声乐能力。

4. The countertenors' harmonies blended seamlessly with the rest of the vocalists in the ensemble.
男高音歌手的和声与合唱团中其他歌手的声音完美融合。

5. Countertenors are often praised for their ability to sing with clarity and agility in the upper register.
男高音歌手常常因其在高音区清晰而灵活的歌唱能力而受到赞扬。

6. The use of countertenors in early music performances has seen a resurgence in recent years.
男高音歌手在早期音乐演出中的运用近年来有所复兴。