动词
中文翻译：预处理
同义词：
['prepare', 'pre-process例句：1. Before the experiment', 'we need to pretreat the sample with chemicals.（在实验之前，我们需要用化学物质预处理样本。）']
例句：
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1. Before the experiment, we need to pretreat the sample with chemicals.
在实验之前，我们需要用化学物质预处理样本。
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2.The engineer pretreated the metal before it was machined.
工程师在加工金属之前先对其进行了预处理。
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3. The food was pretreated with a chemical solution before being cooked.
食物在烹饪前被化学溶液预处理过。