readable

The professor's latest textbook is surprisingly readable for such a complex subject.

(Chinese) 对于这样一个复杂的主题，这位教授最新的教科书竟然非常易读。

The ink had faded so much that the words on the ancient map were barely readable.

(Chinese) 墨水褪色太厉害，古地图上的字迹几乎无法辨认。