名词
中文翻译：Unknown
同义词：
['intestines', 'gut', 'tract']
例句：
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1. The doctor advised him to take a rest and avoid straining his muscles during the operation.
医生建议他在手术期间休息，避免用力。
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2. The scientist conducted experiments on the digestive system of crayfish.
科学家对螃蟹的消化系统进行了实验。
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3. The patient was given antibiotics to treat the infection in his cloaca.
患者被给予抗生素治疗他的肛门感染。