apang

 @echo off
setlocal enabledelayedexpansion
(for /f "delims=" %%a in (a.txt) do (
    set "str=%%a"
    set str=!str:我=^

我!
    set str=!str:的=的^

!
    echo !str!
))>b.tmp
for /f "delims=" %%a in ('type b.tmp ^|findstr "我.*的"') do echo %%a>>b.txt
del  b.tmp
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