研究人員

研 = 开 + 石 : Maud Younger is lacking salt for her ... . Luckily, there's a salt stone just inside the anthill's kitchen, so she uses a bottle opener to grind off some salt.

究 = 九 + 穴 : Joan of Arc (ji) is carefully studying (究) cave paintings (穴) that have appeared over night in front of the outhouse (ou1) using mass spectrometry. She carves off a little of the paintings and puts them in the mass spectrometer. As it emits a huge cloud nine (九), the spectrometer shows on the display that the main component is love.

人 = 丿 + ㇏ : Mnemonic symbol: Neanderthal Man (人). Robinson Crusoe (r-) is looking for snacks in the encampment's kitchen (-en2) when he suddenly spots Neanderthal Man (人). Neanderthal Man offers him a banana (丿), but Robinson Crusoe doesn't trust the present and pokes it with a finger (㇏).

员 = 口 + 贝 : Mnemonic symbol from 服务员, a waiter.

员 = 口 + 贝 : Yu the Great and a crab are having dinner just inside the anthill's kitchen. They ordered mandarins, and the waiter serves them.