名词
中文翻译：Unknown
同义词：
['hypersonic flight', 'supersonic flight', 'hypersonic flight']
例句：
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1.The spacecraft made a parabolic trajectoryto reach the moon.
宇宙飞船以抛物线轨迹到达月球。
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2. The parabola was used todescribe the shape of the planet.
抛物线用来描述行星的形状。
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3. Theparabola is a curve that describesthe path of an object moving in astraight line.
抛物线是描述物体沿直线运动路径的曲线。