metatable
美
英 
例句
A metatable is a (normal) Lua table that maps standard operations to custom functions that you provide.
元表是一個(普通的)Lua表,它將標準操作映射成我們提供的函數。
The keys of the metatable are called events; the values (in other words, the functions) are called metamethods.
元表的鍵值稱為事件;值(換而言之就是函數)稱為元方法。
Each table and userdata object can have its own metatable.
每個表和userdada對象都可以具有自己的元表。