to react suddenly from shock or surprise
ショックや驚きから突然反応する (shokku ya odoroki kara totsuzen hannou suru)
"He jumped out of his chair when he heard the news."
"彼はそのニュースを聞いて椅子から飛び跳ねました。" (Kare wa sono nyūsu o kiite **isu kara tobi hanemashita**.)
to contact a potential customer without prior introduction
To amaze or impress someone greatly.
A significant advancement or achievement.
learning through experimenting and correcting mistakes
a person who is considered a disgrace to a group or family
a person who promotes a brand through personal influence
