投影仪正投放着演示文稿。

A ___projector is displaying a presentation.

我们公司会议室里的投影仪坏了，没法播放演示文稿。

The ___projector in our meeting room is broken, so we can't display the presentation.

作为一名城市规划师，她是一位出色的规划者，能够预见未来二十年的发展趋势。

As an urban planner, she is an excellent ___forecaster who can foresee development trends for the next two decades.