名词
中文翻译：预孕机器
同义词：
['pregnancy tester', 'pregnancy monitor', 'prenatal machine']
例句：
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1. The doctor usesa prepreg machine to check the fetal heart rate during pregnancy.
医生使用一种预孕机器来检查孕妇的胎儿心率。
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2. The nurse was busy checking the prepreg machine every morning before starting her shift.
护士每天早上忙着检查预孕机器，然后开始她的班次。
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3.The prepreg machine is used to detect early signs of pregnancy and can help women plan their pregnancies more effectively.
预孕机器用于检测早期怀孕的迹象，可以帮助女性更有效地计划怀孕。