Radical 力

5 strokes

power 力 (14) + mouth 口 (5) = add 加

[加以 (120) jiāyǐ moreover; ought to]

[加工 (147) jiā gōng to process (unfinished products)]

A power socket has been installed by the mouth of each cave, to add the cave dwelling area to the electricity grid. / Two giant workmen arrive, carrying a huge jar of plugs and switches between them.