医学

医 = 匚 + 矢 : Maud Younger is floating in front of the space station and very sick. There is a doctor around, but he is floating in space too, with no way of propulsion. The medicine Maud Younger needs is stored in darts which in turn are stored in a metal box. The doctor thus throws the darts with the medicine at Maud Younger to help her.

学 = 小 + 冖 + 子 : Xu Xian wants to study scienceology and learn more about daisies. Just inside the elevator's kitchen, he put some daisies into a prize cup and covered them with a cooking top. He wants to study the growth rate of the daisies depending on the pH of the water in the prize cup.