The letter was handwritten, in a hasty, barely decipherable scrawl.

这封信是手写的，字迹潦草，几乎无法辨认。

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。

Marks on a clay tablet fragment found in Greece are the oldest known decipherable text in Europe, a new study says.

一个新的研究表明，最近在希腊发现的粘土碑碎片上的记号，是欧洲现知最早的可辨认的文字。

The biggest problem with toolbars is that although their controls are fast and quickly memorable, they are not initially decipherable.

工具栏最大的问题在于尽管其控件速度快且容易记住，但它们不是一开始就可理解的。