提出了一种交互式目标航线的建立和推演方法以及雷达目标探测时间的判定方法。
Besides that, an interactive method for drawing target tracks and a time decision method for radar detecting target are proposed in this paper as well.
意大利探险家哥伦布受命西班牙国王，四次率领船队探索新世界，但从来没有完成他最初的目标，也就是找到一条向西通往亚洲的海上航线。
Columbus, an Italian explorer sailing under the Spanish flag, led four expeditions to the New World, but never accomplished his original goal — to find a western ocean route to Asia.
当我想到，联合航空93号班机上的乘客，于2001年9月13日那一天，当被他们怀疑飞机正处在攻击华盛顿的一个目标的航线上时，他们的英雄献身的奋斗精神就会在我的脑海中涌现。
The heroic effort of the passengers on United Flight 93, which was suspected to be in line to strike a Washington target on 9/11/2001, comes to mind.
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