The un 's doughty demographers have declared that october 31st is the day on which the world 's population reached 7 billion .
联合国强悍的人口统计学家宣称世界人口在10月31日达到70亿。
As a jewish teenager he was a doughty street-fighter in the london slums , where adherents of pre-war fascism were once again marching , chanting " get rid of the yids " .
Some american friends of israel argue gamely that israel is a strategic asset to the superpower , a doughty democracy that provides intelligence , high technology , storage for american weapons and so forth .
A doughty lover of liberty , who believed government , should be small , laws unobtrusive , and men left alone to take responsibility for their own lives and their own decisions .