名词
中文翻译：减少的痕迹
同义词：
['reduction', 'trace', 'residue例句：1. The scientist useda microscope to reduce the trace of thevirus in the sample.（科学家使用显微镜来减少样本中病毒的痕迹。）2. Thedetective found a reduced traceof blood on the crime scene.（侦探在犯罪现场发现了血迹减少的痕迹。）']
例句：
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1. The scientist useda microscope to reduce the trace of thevirus in the sample.
科学家使用显微镜来减少样本中病毒的痕迹。
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2. Thedetective found a reduced traceof blood on the crime scene.
侦探在犯罪现场发现了血迹减少的痕迹。
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3. The chemical reaction produced a reduced traceof hydrogen gas.
化学反应产生了氢气气体减少的痕迹。