to be very brave and calm under pressure
在压力下非常勇敢和冷静 (zai yālì xià fēicháng yǒnggǎn hé lěngjìng)
"A firefighter must have nerves of steel to face danger every day."
"消防员必须有钢铁般的神经才能每天面对危险" (xiāofángyuán bìxū yǒu gāngtiě bān de shénjīng cáinéng měitiān miànduì wēixiǎn)
A difficult task or situation to handle.
to have ambitious goals and aspirations
refers to artificial intelligence systems capable of learnin...
Very calm and relaxed.
what is normal or expected in a given situation
to travel or walk around aimlessly
