A stationary set of chromatically tuned bells in a tower , usually played from a keyboard .

排钟，钟琴塔楼里一套固定的乐器，通常在键盘上演奏。

The shimmering picture above is the result of two images - of the same subject but slightly offset from each other - which are then changed into chromatically opposite colours ( like red and green ) , with one superimposed upon the other .

上面这张闪烁的图片是由两张内容完全相同图像共同组成，不过两张图像中使用的颜色都是互补色（比如说红色和绿色），上色之后，将两张图片重叠放置，不过需要稍微的错开来一点儿。