They summoned men to defend their country.

他们召集男人来家。

We must defend our motherland from the enemy.

我们必须祖防御进犯之敌。

We are determined to defend our motherland at all costs.

我们决心不惜任何代价祖。

The general detached a small force to go and guard the palace.

将军派遣一支小部队去宫殿。

It is obligatory on every citizen to safeguard our great motherland.

我们伟大的祖每一个公民尽的义务。

The protection of the country is the duty of everyone.

家每个人的责任。

We fought shoulder to shoulder to defend our country.

我们并肩战斗祖。

To access food sources or defend the territory,agonistic behavior,mostly in a form of ritualization,was frequently displayed.

为获得食物和领域，黑颈鹤之间(或与灰鹤之间)常发生争斗，争斗的主要形化威胁。

North American Aerospace Defense Command (NORAD) - a binational command involving the United States and Canada which provides warning of missile and air attack against both of its member...

北美航空防御指挥部-美和加拿大的联合指挥部，提供导弹发射和空袭的警报，北美领空，并提供空中防御。