罕见病的英文：
rare disease
每年二月最后一天为国际罕见病日(Rare Disease Day)。
参考例句：
The doctor was unable to type the rare disease
.医生不能确定那种罕见病的类型。
rare是什么意思：
adj. 稀罕的；珍贵的，极好的；半熟的
I will have a cheeseburger, medium rare.
我要一份起士汉堡，五分熟。
I rarely have short drinks.
我很少喝烈性酒。
Journalists are rarely admitted to the region.
新闻记者很少获准进入该地区。
disease是什么意思：
n. 疾病，不健全，病害，弊病，烦恼
v. 使有病，使不健全
Surgical disease, or the surgical response to disease is of similar antiquity.
外科疾病或对疾病的外科处理的历史同样久远。
Some diseases are presented by heredity.
有些疾病是由于遗传导致的。
ear bacterial disease of maize
玉米穗细菌病
day是什么意思：
n. 一天；白昼，白天；工作日；时代，时期
Things go on day by day.
事情逐日进行着。
Day by day the situation is improving.
情况在一天天地好转。
Like this, day after day.
就这样，日复一日。
