defn
美
英 
例句
Thus, defn is not part of the language specification but it is added by the language's core library.
也就是說,defn并不是此語言規范的一部分,而是通過此語言的核心庫被添加上的。
You might think that defn is a keyword of the language, but it is actually a macro.
您可能會認為defn是此語言的關鍵字,但它實際上是個宏。