经济学人下载:美国犯罪数据激增?(1)

He said law enforcement facts turn the tide upon those who seek to asperse their countries'good name.
他说执法的事实遏止了那些想要破坏国家名誉的人。

2.at best 充其量，顶多

We can only finish half of it this afternoon at best.
今天下午我们充其量只能完成一半。