Many of these soldiers now wear hearing aids. That limitation alone may keep some from going back to the front line.

很多到坎贝尔堡治疗的军人都使用助听器，仅仅这个听力损伤就让一些军人不能再到前线作战。

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There are some fears that are healthy fears. Fear right now is what keeps you from running out in front of a car. It's what keeps you from touching the hot stove.

还有一种健康的恐惧存在，比如此刻让我们跑开避让前面一辆正在行驶的汽车，或者避免碰触高温的火炉，这些都是健康的恐惧。

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Some of these systems use radar to keep a car at a set distance from the one in front.

有些这种系统使用雷达让车子和前面的车子保持一定的车距。

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In a letter in late 1861 from the front, "Will indeed settle the question, for some years at least, as to whether union or secession, the Constitution or rebellion, shall triumph.

在一封1861年年底来自前线的信中,"会解决问题,但至少需要数年,不管是联合还是独立,宪法抑或是起义,终将有一方胜利

耶鲁公开课 - 美国内战与重建课程节选

Following his first failed leadership bid Mr Clarke headed to the backbenches, where he largely vanished from the front line of the national political scene, with some company directorships and other pursuits helping to occupy his time.

BBC: Profile: Kenneth Clarke

There is a slowly emerging recognition within the military that those combined pressures affect the troops who battle the war from afar in some of the same ways that strain forces on the front lines.

NPR: AP IMPACT: Combat Stress Felt Far From Front Lines

The pair added 113 for the fourth wicket, with some fantastic front-foot play taking the initiative away from the home side.

BBC: Australia recover from poor start