8成新英文怎么说？

一般用eighty percent new
也可以用fairly new等修饰

以下例句出自骆驼祥子
英文版

That wouldn't be enough to buy a brand-new rickshaw, of course, but it would be enough to buy one that was eighty percent new.
虽然不够买十成新的车，八成新的总可以办到了！

Then there is a category of slightly older men, and others who for health reasons cannot run quite as fast, or who for family reasons cannot afford to let a day go by without earning something. Most of them pull fairly new rickshaws.
比这一派岁数稍大的，或因身体的关系而跑得稍差点劲的，或因家庭的关系而不敢白耗一天的，大概就多数的拉八成新的车；

eighty percent new

8成新: eighty percent new

80% new