名词
中文翻译：直线
同义词：
['line', 'straight line']
例句：
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1. The car drove along the straight line to the station.
汽车沿着直线开到车站。
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2. The teacher drew a straight line on the blackboard.
老师在黑板上画了一条直线。
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3. The arrow points directly to the spot where the ball is going to land.
箭头直接指向球即将落地的位置。