名词
中文翻译：Unknown
同义词：
['planar path', 'planar curve']
例句：
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1. The spacecraft's trajectory was carefully planned to avoid collision with the asteroid.
宇宙飞船的轨迹被仔细规划，以避免与小行星相撞。
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2. The robot's movement follows a planar trajectory that allows it to navigate through complex environments.
机器人的运动遵循一个平面轨迹，使其能够穿越复杂的环境。
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3. The satellite's trajectory is monitored closely to ensure its safe arrival at the desired location.
卫星的轨迹受到密切监控，以确保其安全到达预定位置。