unreadable

1. ADJ If you use unreadable to describe a book or other piece of writing, you are criticizing it because it is very boring, complicated, or difficult to understand. (书)无聊的; 难懂的[表不满]

For some this is the greatest novel in the world. For others it is unreadable. 对有些人来说，这是世界上最好的小说。对另一些人来说，这小说枯燥难懂。

2. ADJ If a piece of writing is unreadable, it is impossible to read because the letters are unclear, especially because it has been damaged in some way. (字迹)难以辨认的[usu v-link ADJ]

...if contracts are unreadable because of the microscopic print. ...如果合同不能辨认是因为超小的字体。

3. ADJ If someone's face or expression is unreadable, it is impossible to tell what they are thinking or feeling. (表情)莫测的[文学性]

He looked back at the woman for approval, but her face was unreadable. 他回头看那个女人想要得到赞同，但她面无表情。