Once the time has expired, a short window of opportunity will occur, in which new players can enter the zone for combat, before the window again closes the zone.

一旦到期，将会出现一个小机会窗口，新玩家可以在窗口关闭前进入该区域进行战斗。

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For example, firefighters are in high-risk in fire fighting combat, when they may have to enter complex high-rise buildings. The fire scene is complicated.

例如，在消防作战中，消防队员的工作性质高度危险，他们可能会进入一些复杂的高层建筑，消防员的自身安全就成为问题。

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The elect were called to combat the devil and his evil powers, and to enter into a knowledge of the deep mysteries of God.

该选举被称为打击魔鬼和他的邪恶势力，并进入一个深刻认识神的奥秘。

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But some lawmakers criticized the Pentagon's move and questioned whether physical requirements would permit women to enter combat duty in large numbers.

WSJ: Panetta to Open Combat Roles to Women

Particularly as more women enter combat roles, military men need to learn more about their own sexual psyche and why they may have feelings of aggression, entitlement or expect sexual privileges.

CNN: Soldiers and sex: Can men evolve?

His jungle combat experience of treating wounded soldiers with scant medical supplies prompted him to enter the medical profession upon his return to France and his subsequent move to America, with Suzanne, in the 1950s.

WSJ: Arlington burial set for Swiss-born NY WWII hero