今週の知らなかった単語

novice ... a beginner or a person who don't have any experience in a particular field.
 I am a novice in a table tennis.

know the ropes ... to have enough experience about something

 if you want to join a soccer club, you should know the ropes.

 pinprick ... a very small cut
 I had a pinprick after touching a bouquet of roses.

mentor ... a knowledgeable person, teacher
 my mentor has always believed in my ability.

interrogate ... to ask someone a lot of questions for a long time in order to get information.