it held that israel’s partial blockade of the gaza strip since hamas took power there three-and-a-half years ago amounted to collective punishment and violated the geneva conventions.
而在原文中,and 连接的两个动词 amountto和violate 是并列的,这两个动词共享一个主语-----israel’spartial blockadeofthegazastrip.因此这里确切的意思是说:「哈马斯掌权三年半以来,以色列对加沙地带实施了局部戒严,此举已经构成一种collectivepunishment ,而且违背了日内瓦公约。」