Someone who is easy to understand or transparent.
理解しやすい、または透明な人 (rikai shiyasui, matawa tōmei na hito)
"She’s an open book; you always know what she’s thinking."
"彼女はオープンブックだ; 彼女が何を考えているかいつもわかる。" (kanojo wa **open book** da; kanojo ga nani o kangaete iru ka itsumo wakaru.)
the point where progress stops; the end of something
to continue doing or supporting something despite challenges
to gain unauthorized access to a system or network
a person who loves reading books
extremely thankful
to take responsibility for someone and help them learn