n. a man distinguished by exceptional courage and nobility and strength
n. the principal character in a play or movie or novel or poem
n. Greek mathematician and inventor who devised a way to determine the area of a triangle and who described various mechanical devices (first century)
n. (classical mythology) a being of great strength and courage celebrated for bold exploits; often the offspring of a mortal and a god
n. 英雄, 超越常人者, 男主角
1. The firefighter is a hero for saving the children from the burning building.
消防员是英雄，因为他从着火的建筑中救出了孩子们。
2. In the movie, the hero defeats the villain and saves the world.
在电影中，英雄打败了坏人，拯救了世界。
3. Many people consider doctors to be heroes for their hard work and dedication.
许多人认为医生是英雄，因为他们的辛勤工作和奉献精神。