decipherable

1. The letter was handwritten, in a hasty, barely decipherable scrawl.
   这封信是仓促手写而成，潦草得几乎无法辨认。
2. It is a great pity that this inscription has become hardly decipherable.
   可惜字面已多剥蚀。
3. The mark must be legible and indelible, and the characters easily decipherable.
   标识应为易读且不易磨掉的，文字也应使用易理解的词语。

adj

1. easily deciphered

   Synonym:    clearreadable