该特工人员为东德做了20多年的间谍。The agent spied for East Germany for more than twenty years.特工定期围捕可疑的颠覆分子。Agents regularly rounded up suspected subversives.这个特工人员是外国雇佣的.The agent was in the employ of a foreign country....
Some amphitheaters could be filled with water so that ship battles could be fought.一些这样的圆形竞技场还会被注满水以便表演海上作战的船只能够航行.In 7 th century BC, Romans inherited the traditions of Greece and built racetracks and unroofed amphithea...