简单的
复杂的
快速的
难以理解的
sophisticated：adj.精密的，复杂的。
Very sophisticated threats are coming after you that may not be easy to see, but they’re there, and you certainly have to be ramping up your efforts on that. 那些非常复杂的安全威胁在不经意间就会来临，你可能没注意但它们的确存在，你可得加把劲花些时间和精力来处理了。
