Here is a script written in AHK for translating entire segments in MemoQ with the help of Google Translate by means of the program GT4T (http://gt4t.net/gt4t_en/). The script assumes that you have mapped the key combination ALT+J to translate the selected words in GT4T, but of course this could be changed accordingly. Just press ALT+X and the segment will be translated via Google Translate.
; Memoq
SendMode Input
!x::
Send ^+s
Sleep, 150
Send ^a
Sleep, 150
Send !j
return