they'll = skrót od "they will"

TOGETHER They'll try and tear

Source: http://hitrecordjoe.tumblr.com/post/3641243987/together-theyll-try-and-tear-us-apart-but-well

skrót od "they will"

English sentence and Polish translation

They'll let us know at the end of the year. = Oni dadzą nam znać pod koniec roku.