阻力

阻 = 且 + 阝 : Hostile aliens are seizing the space station! Inside (Ø3), the pope (阝) and Zapatista Zebra (zu) have constructed a barricade out of a few shelves (且). They will block (阻) the way of any alien which wants to seize the navigation bridge!

力 = ㇆ + 丿 : Mnemonic symbol: a power button.

Li Qingzhao (li) just had a shower in the space station's bathroom (Ø4) and wants to use the hair dryer, but there's no plug, just the bare end of the cable! She uses all her power to build an electricity plug, and for the two pins she uses a plough (㇆) and a banana (丿). Finally she hits a big power button (力) to turn the power on.