to be very brave and calm under pressure
プレッシャーの中で非常に勇敢で冷静であること (pureshā no naka de hijō ni yūkan de reisei de aru koto)
"A firefighter must have nerves of steel to face danger every day."
"消防士は毎日危険に直面するために鉄のような神経を持たなければならない" (shōbōshi wa mainichi kiken ni chokumen suru tame ni tetsu no yōna shinkei o motanakereba naranai)
to have a different opinion or perspective
to stay focused on a task or goal
to take on a difficult task without preparation
to become aware of something important
to support or help someone when they need it
to become familiar with something new