previously

以前地，先前地adv.

• His statement ran athwart what was previously said.

  他讲的话与先前所说的相抵触。

• But a new phenomenon has appeared on the world scene: rapidly rising crime rates in nations that previously reported few offences.

  但是，在世界舞台上出现了一个新现象：以前犯罪报告很少的国家的犯罪率迅速上升。

• Previously, scientists noticed pollutants arriving in the Arctic with the wind.

  此前，科学家们注意到污染物随风抵达北极。