用vbA如何实现vlookup功能

Sub cdsr()
    Dim Wb As Workbook
    Dim ws As Worksheet
    Dim arr, brr, i&, j&
    Dim Temp As String
    Temp = ThisWorkbook.Path & "\汇总数据表.xlsx"
    Set Wb = GetObject(Temp)
    arr = Wb.Sheets(1).Range("A1").CurrentRegion
    For Each ws In Sheets
        brr = ws.[a1].CurrentRegion
        For i = 2 To UBound(brr)
            For j = 2 To UBound(arr)
                If brr(i, 1) = arr(j, 1) Then
                    brr(i, 2) = arr(j, 2)
                End If
            Next
        Next
        ws.[a1].Resize(UBound(brr), 2) = brr
        Erase brr
    Next
    Wb.Close False
    Set Wb = Nothing
End Sub