“泻药”造句

早在16世纪镁盐被用作泻药.
Magnesium were employed as cathartics as early as the 16 th century.

这是疗效很好的泻药.
The medicine was an effective purge.

医生认为给病人服泻药的时候到了.
The doctor think it is time that he physic the patient.