使用CSC.EXE与Devenv时，为什么输出文件大小不同？

I am playing with Nant and CSC. I notice that a debug version of my dll is 140k if compiled via CSC and nant build scripts. However if i build a debug version in the Visual Studio env, it is at 203k!? the smaller DLL DOES appear to work fine in the main program however. Any ideas? I am playing with Nant and CSC. I notice that a