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第三题
@echo off
set var=bbs bathome.net
echo %var%
for /f "tokens=1,2" %%a in ("%var%") do (echo %%a&set aab=%%b)
for /f "delims=. tokens=1,2" %%a in ("%aab%") do (echo %%a&echo %%b)
pause >nul