为了救出人质，警察不得不穿越火线。

The police had to cross fire to rescue the hostages.

他在任务中穿越火线，表现得非常勇敢。

He was very brave during the mission when he had to cross fire.

在战场上，他必须穿越火线才能到达安全地带。

On the battlefield, he had to cross fire to reach the safe zone.

这部电影讲述了一群士兵如何穿越火线的故事。

The movie tells the story of a group of soldiers who cross fire.

他们在游戏中成功地穿越火线，赢得了比赛。

They successfully crossed fire in the game and won the match.

今天在穿越火线的重点就讨论相关.

Crossing the line of fire today in the focus of the discussion related.

在玩穿越火线时练枪法是从什么开始？

When playing across the line of fire marksmanship training from the beginning of what?

玩了这么长时间的穿越火线了，感觉上来说还不错！

Playing for such a long period of crossing the line of fire, and in terms of feeling good!