名词
中文翻译：暗迹管
同义词：
['dark tracer', 'dark tracer tube例句：1. The dark-trace tube was used to detect the presence of a chemical in the sample.（暗迹管被用来检测样本中化学物质的存在。）']
例句：
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1. The dark-trace tube was used to detect the presence of a chemical in the sample.
暗迹管被用来检测样本中化学物质的存在。
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2.The dark-trace tube was used to study the behavior of molecules in the atmosphere.
暗迹管被用来研究大气中分子的行为。
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3.The dark-trace tube was used to create a map of the underground river system.
暗迹管被用来绘制地下河流系统的地图。