An American officer on the scene said no one had intruded into the space he was defending.
现场的一名美国军官说还没有人闯入过他所防卫的区域。
Accurate and timely information on space objects is vital for defending a satellite, but also necessary for attacking one.
对太空目标的准确而及时地信息对于保护卫星很重要，同样对攻击卫星也是必要的。
"We are building new missiles that will be capable of defending not only against air-defense systems but space-based systems," Gen. Alexander Zelin said.
“我们正在研发新的导弹，将不仅能够保护防空系统，而且能够防卫以空间为基础的系统，”Gen .AlexanderZelin表示。
And NASA is defending its decision not to repair the gouge in the shuttle's underbelly in space.
对航天飞机腹部的沟槽在太空没有维修一事，美国宇航局做出了辩解。
He knows we defend with only one midfield player in front of two central defenders, he knows the importance of defending well the inside space.
他知道我们现在只依靠一个中场球员和两个中卫进行防守，他知道在边路防守的重要性。
The archetype of residential space stems from the defense concern for human body, which can be expressed in a body-defending schema.
居住空间的原型起源于人类维护人体安全的防卫意识，这种防卫意识可以用一个人体维护结构图式表达。
The archetype of residential space stems from the defense concern for human body, which can be expressed in a body-defending schema.
居住空间的原型起源于人类维护人体安全的防卫意识，这种防卫意识可以用一个人体维护结构图式表达。
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