a he or a she

例句：

1. 1. I need to find a he or a she to help me with the project.
   我需要找一个他或她来帮我完成这个项目。
2. 2. She is a he or a she who loves to travel.
   她是一个喜欢旅行的他或她。
3. 3. The teacher asked if anyone could be a he or a she to help with the presentation.
   老师问是否有人愿意作为他或她来帮忙准备演讲。