to carefully consider the facts of a situation in order to understand something, make a decision, or solve a problem
to carefully consider the facts of a situation in order to understand something, make a decision, or solve a problem
in a very nervous or frustrating state of mind in face of a problem or situation one knows very little or nothing about
said when one does not have a definite answer to a particular question, similar to the questioner
to fail to understand or interpret or understand something correctly
to have no information regarding a particular subject
used when one is incapable of understanding or remembering a particular thing
封闭的书
这项新技术对大多数人来说是一本封闭的书——他们还不熟悉它。
used to describe something that is complicated due to not being clearly described or shown
to be incapable of understanding even the simplest concepts
the limits of human knowledge or understanding, representing areas that remain unknown or unexplored
confused and unable to think clearly
to fully understand something difficult, complicated, or strange
to make an attempt to understand someone or something that is puzzling