Bill was a senior police officer who joined the force back in1982.

比尔是一位高级警官，他早在1982年就加入了警察队伍。

youdao

The War Department sent General George Crook to punish the Indians and force them back to their reservation.

VOA: special.2010.04.08

Whenever there is a force, it can be traced back to a tangible material cause, which is all the time a force of contact, with the exception of gravity.

如果有作用力,那它一定能找到一个明确的实体施力物体,也就是无论何时物体受的都是接触力,引力除外

耶鲁公开课 - 基础物理课程节选

If the Union force attacked before Stonewall Jackson got into position, Lee could not possibly hold it back.

VOA: special.2009.10.15

Synthetic vision systems were created by NASA and the U.S. Air Force back in the late 1970s to improve cockpit situational awareness, especially when operating in reduced visibility at low altitudes.

FORBES: Flying Blind No Longer

The commission argued that viewing sectarianism as "Protestant-Catholic religious prejudice, political factionalism, or even 'tribalism' " placed it outside the context of well-established international human rights law, specifically the International Convention on the Elimination of All Forms of Racial Discrimination, which came into force back in 1969.

BBC: Is sectarianism racism?

Should we force them back to even worse lives in order to salve our consciences?

FORBES: After Conflict Minerals Comes The Death Metal: Tin. And It's Apple's Fault Again.