a person with no prior knowledge or experience
前知識や経験がない人 (mae chishiki ya keiken ga nai hito)
"He came to the school like a blank slate."
"彼は学校に白紙のように来た。" (Kare wa gakkō ni **hakushi** no yō ni kita.)
to stay composed during difficult times
to feel very nervous about something
an approximate estimate or number
to surprise or impress someone very much
to be so surprised that you doubt what you are seeing
to have a casual conversation about unimportant topics
