德国和奥地利周六决定向滞留在匈牙利的数千名难民开放边境。请看本报昨日的报道：

    Austria and Germany threw open their borders Saturday to thousands of exhausted migrants from the east, bussed to the frontier by a right-wing Hungarian Government that had tried to stop them, but was overwhelmed by the sheer numbers of people.

    Left to walk the final stretch into Austria, rain-soaked migrants were whisked by train and shuttle bus first to Vienna and then by train to Munich and other cities in Germany.

    报道中的throw open就是“开放”。例如：

    Each August the artists in the town throw open their doors to welcome visitors and show their work.

    每年八月该城的艺术家们打开家门欢迎访客并展示作品。