名词
中文翻译：标记针
同义词：
['marker', 'pinpoint']
例句：
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1.This marking pin is used to mark the starting point of the race.
这个标记针用于标记比赛的起始点。
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2. The scientist marked the spot with a marker before he started his experiment.
科学家在开始他的实验之前，用标记笔在这个地点做了标记。
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3.The teacher asked the students to use their markers to draw a circle on the whiteboard.
老师要求学生们使用标记笔在白板上画一个圆圈。