heart [名词] 心脏 Ex: He had a heart condition that required him to take medication daily . 他有一种心脏状况,需要每天服药。
brain [名词] 脑 Ex: It 's important to wear a helmet to protect your brain while riding a bike . 骑自行车时戴头盔保护你的大脑很重要。
lung [名词] 肺 Ex: The lungs are essential organs responsible for exchanging oxygen and carbon dioxide with the bloodstream during respiration . 肺是呼吸过程中负责与血液交换氧气和二氧化碳的重要器官。
shoulder [名词] 肩膀 Ex: She carried the heavy bags on her shoulders while hiking up the steep trail . 她在陡峭的小径上徒步时,把沉重的袋子扛在肩膀上。