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1.The spacecraft's Regge trajectoryis critical for its survival.
宇宙飞船的轨道对于其生存至关重要。
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2. Thesatellite's trajectory wascarefully planned to avoid collisionswith other objects.
这颗卫星的轨迹被仔细规划以避免与其他物体相撞。
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3.The trajectory of the comet was predictedto be highly elliptical.
这颗彗星的轨迹被预测为高度椭圆形。