动词
中文翻译：Unknown
同义词：
['test poison', 'test for toxicity', 'test substance']
例句：
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1. The police are trying to determine the source of this mysterious poison.
警方正在试图确定这种神秘毒药的来源。
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2. Doctors often test patients' blood for signs of infection before administering antibiotics.
医生通常在给患者开抗生素之前，会先检测患者的血液是否有感染的迹象。
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3. In ancient times, people would test new crops for toxicity before planting them in their fields.
在古代，人们在种植新作物之前，会先测试这些作物的毒性。