deprecation

1.He merely lifted his eyebrows in placid deprecation of himself and everybody else.

他仅仅掀掀眉毛，平心静气地表示他自己和其他人反对。

2.Message: 'This function or variable may be unsafe. Consider using strcat_s instead. To disable deprecation, use _CRT_SECURE_NO_DEPRECATE. See online help for details.'

大概说是什么不安全，还要我用_CRT_SECURE_NO_DEPRECATE这个什么东西怎么用阿？具体如何操作才能消除？