在英语中,可以用一些短语来表示 "不经常生病" 的意思。其中一些常用的表达方式包括:

"rarely get sick" 或 "rarely fall ill",意思是 "很少生病"。例如:
"I rarely get sick, so I don't usually carry any medicine with me." (我很少生病,所以我通常不带药。)
"hardly ever get sick" 或 "hardly ever fall ill",意思是 "几乎从不生病"。例如:
"My sister hardly ever gets sick, she must have a very strong immune system." (我的姐姐几乎从不生病,她一定有非常强大的免疫系统。)
"never get sick" 或 "never fall ill",意思是 "从不生病"。例如:
"My grandma never gets sick, she must be in good health." (我奶奶从不生病,她一定身体很好。)

这些表达方式均来自英语的日常用语,可以用来描述一个人不经常生病的情况。