How to pronounce 戰後 in Cantonese (5 out of 6):

因為德國喺戰後需要建設國家
Because Germany needed to build a country after the war.

Cantonese Sentence Breakdown

因為 jan1 wai6
due to
德國 dak1 gwok3
Germany
hai2
in
戰後 zin3 hau6
post-war
需要 seoi1 jiu3
need
建設 gin3 cit3
(noun) Infrastructure
國家 gwok3 gaa1
country