医生为这次感染开了高剂量的抗生素。

The doctor prescribed a high ___dose of antibiotics for the infection.

我的祖母每天服用一剂心脏药物以保持健康。

My grandmother takes a daily ___dose of heart medication to stay healthy.

儿童在一岁左右会接种一剂麻疹疫苗。

Children receive a ___dose of the measles vaccine around their first birthday.