In addition, some items are just not knowable until runtime.

　　此外，有些內(nèi)容到運行時才能知道。

　　We have this clever illusion that the world is a knowable place.

　　我們有這種聰明的幻覺，就是世界是個可認知的地方。

　　All of these things are knowable and definable and yet obscured and opaque.

　　所有這些事情都是可知的、確定的，但又是模糊而朦朧的。