front line

基本解釋

They do not rotate out of the front line: soldiers fight without a break for the three years they are enlisted.
更糟的是，阿軍已精疲力竭，他們在前線得不到輪換：其參軍后已連續(xù)不斷地戰(zhàn)斗了三年。
We are on the front line, collaborating to provide a safety net for kids in distress.
我們奮戰(zhàn)在第一線，通力合作為處在困苦中的孩子們營造安全網(wǎng)。
That is clearly a major consideration in the countries in the front line – many of them among the world’s poorest.
這個(gè)問題肯定是前線國家的一個(gè)主要考慮因素 – 它們中的許多都是世界最貧窮的國家。

We are against any war where black soldiersare sent to the front line to die for a countrythat hates them.
You want tough guys up front; you don't want your front line being broken.
誰都希望把壯漢放在前面,因?yàn)檎l也不想前排被攻破
耶魯公開課 - 古希臘歷史簡介課程節(jié)選
And the customer in front of you in line has so many items to check out.
排在你之前的客人買了很多東西需要結(jié)賬。
I can't 課堂 - SpeakingMax英語口語達(dá)人

Simple exclusion of the opinion of front line people has long been proven to be short-sighted.
FORBES: Business Aviators - Is that all they are, or should be?

The front line is the place where two opposing armies are facing each other and where fighting is going on.
Someone who is in the front line has to play a very important part in defending or achieving something.