区别在于：
mediciner指医生时不太常用，多用于书面语，主要指药剂师，而doctor做医生讲时很常用，还有博士的意思。
比较：
mediciner
1、Mediciner Paige will be here right after lunch to see her.
佩奇医生一吃完午饭就会来这儿看她。
2、I saw yet another mediciner.
我又看了一个医生。
3、If it had not been for the mediciner's care I should not be speaking to you now.
要不是医生的照料我现在就不能跟你讲话了。
doctor
1、The doctor felt my pulse and looked down my throat.
大夫摸了摸我的脉，又瞧了瞧我的嗓子。
2、The doctor said it was colic and that she would grow out of it.
医生说她患的是腹绞痛，长大了就没事了。
3、A doctor and a nurse caught hold of his arms.
一名医生和一名护士抓住了他的双臂。
