presenter

The radio presenter interviewed the famous scientist about the recent discovery.

(Chinese) 电台主持人就最近的发现采访了那位著名的科学家。

The presenter of the Oscars announced the winner for Best Picture.

(Chinese) 奥斯卡颁奖嘉宾宣布了最佳影片奖的得主。

The professor used a wireless presenter to change the slides while walking around the lecture hall.

(Chinese) 教授在演讲厅走动时，使用无线演示笔来切换幻灯片。

Make sure the battery in the presenter is fully charged before you start your presentation.

(Chinese) 在开始演讲之前，确保演示笔的电池电量充足。