微生物学

微 = 彳 + 山 + 一 + 几 + 攵 : Mnemonic symbol: a microscope.

Willy Walrus set up his microscope on a small table in front of the Eiffel Tower. He is investigating a very interesting crystal: the crystal looks like a big flute, and when he chips off pieces with a sledgehammer they also look like little flutes. He stores the chips in a black sneaker and to put them under the microscope he uses a fork.

微 = 彳 + 山 + 一 + 几 + 攵 : Mnemonic symbol: a microscope.

Willy Walrus set up his microscope on a small table in front of the Eiffel Tower. He is investigating a very interesting crystal: the crystal looks like a big flute, and when he chips off pieces with a sledgehammer they also look like little flutes. He stores the chips in a black sneaker and to put them under the microscope he uses a fork.

生 = 牛 + 一 : Mnemonic symbol: a cradle.

Sherlock Holmes (sh) comforts a crying baby bull (牛) in a cradle (生) in front of the engine ((e)ng1) and plays him a tune on a flute (一).

物 = 勿 + 牛 : Willy Walrus (w) wants to become a physicist (物) and does research about dark matter (物) in the space station's bathroom (Ø4). His motivation is to become a super villain and rule the world. Just as he is about to have a breakthrough, a huge black ox (牛) flying with the help of bat wings (勿) hits Willy with an oxerang and takes away the dark matter, saving the world.

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.