名词
中文翻译：注射头
同义词：
['needle tip', 'needle end', 'injection port']
例句：
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1. Thedoctor used a needle to inject themedicine into her arm.
医生用针将药液注入她的手臂。
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2. Thenurse carefully inserted the injectionhead into the patient'svein.
护士小心翼翼地将注射器头部插入患者的静脉。
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3. The patient was given aninjection of insulin to treat his diabetes.
患者被注射胰岛素治疗他的糖尿病。