break (with) [follow] established conventions
古くからのしきたりを破る[に従う]
break [keep] (one's) faith with ...
…との約束を破る[守る]
break (off) one's engagement
婚約を解消する
break (down) prejudices
偏見を打ち破る
break (out of) [escape from] prison
脱獄する
break (open) the seal of the letter [on the bottle]
手紙[ビン]の封を切る[開ける]
break (the power of) the unions
組合の力を弱める
break [enforce] a blockade
封鎖を破る[強行する]
break a branch from [off] a tree
木から枝を折り取る
break a chain [a rope, a string]
チェーン[ロープ,ひも]を引きちぎる