He could play the piano after just spending about seven seconds figuring out the difference between the black and the white keys.

只需花大约七秒钟弄清楚黑键和白键之间的区别，他就可以弹奏钢琴了。

My heart yearned for liberation, for the sweet taste of life outside the confines of these four walls, away from the constant clatter of the black and white keys.

我的心渴望解放，渴望在这四堵墙的限制之外享受生活的甜蜜滋味，远离黑键和白键不断的碰撞声。