If you will be presenting in a dark room (such as a large hall), then a dark background (dark blue, grey, etc.) with white or light text will work fine.
如果您是在一间黑暗的屋子(如大厅)里进行演示，那么暗色背景(深蓝、灰色等)加白色或浅色文本的效果就很好。
In rooms with a good deal of ambient light, a screen image with a dark background and light text tends to washout, but dark text on a light background will maintain its visual intensity a bit better.
在光线明亮的房间里，深色背景和浅色文本搭配的屏幕图像容易泛光，但是浅色背景搭配深色文本的视觉效果就好得多。
Although light text on a dark background is easy to read, this technique should be used sparingly.
尽管在深色背景上使用亮些的字可以让文字容易阅读些，但这个手法应该尽量保守使用。
Although light text on a dark background is easy to read, this technique should be used sparingly.
尽管在深色背景上使用亮些的字可以让文字容易阅读些，但这个手法应该尽量保守使用。
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