His forces are facing are facing an increasingly emboldened, virulent and agile enemy capable of carrying out attack after attack unabated.

VOA: standard.2009.06.15

We throw our city open to the world and never exclude foreigners from any opportunity of learning and observing even though the eyes of an enemy may profit from our liberality " Pericles boasts once again.

我们的城邦向世界敞开大门,且从不排除让外国人,向我们学习及观摩的机会,就算敌人可能因此,从我们的慷慨中受益“，伯里克利斯再次自夸。

耶鲁公开课 - 政治哲学导论课程节选

The traditional answer is that These guys actually did press up against the rows in front of them And that this provided a momentum That gave the front line an advantage in beating the enemy facing them.

传统的回答是,他们实际上是在推挤前面几排友军,为其提供一种动力,使前线在与对面的敌人交战时具有优势

耶鲁公开课 - 古希腊历史简介课程节选

The open nature of the Internet and its use by governments and business make it a rich target for an enemy attacks.

VOA: standard.2009.08.11

The other benefit is deterrence. "It will save time of fighting and will deter in many cases a potential enemy from really launching an attack."

VOA: standard.2010.07.20

"The militants do not fight conventional battles." He says he expects the military will face an enemy deeply entrenched in the mountainous and remote region.

VOA: standard.2009.10.17

But he stressed the United States must combine its military might that has damaged al-Qaida during the past several years with other tools, such as diplomacy and development aid, as well as expand human intelligence to defeat an adaptable enemy.

VOA: standard.2009.08.06

In SERE training military personnel are subjected to many of the same techniques to toughen them up for possible capture by an enemy - and Ritz says SERE trainers were imported to the Guantanamo Bay detention facility.

VOA: standard.2009.04.17