Crystal is glass of the highest quality. There is no flaw in it. A person can see through it without any distortion. This phrase can be used to describe sound, like from a stereo, or a good picture or photograph. The phrase can also be used to say that something spoken or read was completely understood.
像水晶一樣透徹
水晶是非常高品質的玻璃沒有任何裂縫，讓人可以一眼看透明白。這片語主要是形容一台好音質的音響或者一幅完美的圖畫，但也同時可以用來形容一件事情被完全明白。