外部符号 meaning in English

external symbol
out symbol

And causes the compiler to place the library name libcmt . lib into the . obj file so that the linker will use libcmt . lib to resolve external symbols
并使编译器将库名libcmt . lib放入. obj文件中，以便链接器使用libcmt . lib解析外部符号。
This option also causes the compiler to place the library name libcmtd . lib into the . obj file so that the linker will use libcmtd . lib to resolve external symbols
此选项还使编译器将库名libcmtd . lib放入. obj文件中，以便链接器使用libcmtd . lib解析外部符号。