1. 球在空中沿曲线运动
The ball curved through the air.

《牛津词典》

2. 标枪在空中沿曲线运动
The spear curved through the air.

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3. 自动门的门体一般无曲线运动和复合运动形式。
The door body of the automatic door has no curvilinear motion and complex motion.

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4. 然而现在应该把什么看作是曲线运动的线索呢?
And now what is to be regarded as the clue to curvilinear motion?

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5. 然而现在应该把什么看作是曲线运动的线索呢?
And now what is to be regarded as the clue to curvilinear motion?

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