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1·The boomerang effect has also played a role in attempts to reduce the availability of illicit drugs.

反向效应也在试图减少非法药物的供应方面发挥了作用。

2·Other good examples of companies letting data run free in order to get a boomerang effect

其他提供免费的数据，并使自己从中受益的好的例子

3·We remind you that every negative feeling you hold toward another has a boomerang effect.

我们提醒你，每一个你对他人所抱持的负面感觉，都有回力棒的效果。

4·Perhaps in fact the Romanians will feel the need to win and pay for it with a boomerang effect.

事实上，罗马尼亚拼尽全力，他们会不惜一切代价取得比赛胜利。