名词
中文翻译：轨迹
同义词：
['track', 'course', 'path']
例句：
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1. The car's trajectory was unpredictable.
汽车的轨迹不可预测。
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2. The ship's trajectory changed as it approached the coast.
随着船只接近海岸，它的航线发生了变化。
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3. The rocket's trajectory was carefully calculated to reach its target.
火箭的航线被仔细计算以到达其目标。