吸湿

吸 = 及 + 口 : Just when Marie Curie (xi) and Yuwen Huaji (及) were on a space trip in front of the space station (Ø1) they encountered an emergency: the failure of their oxygen supply. Their last hope is a hollow mandarin (口) they brought, out of which they suck (吸) their oxygen.

湿 = 显 + 氵 : Sherlock Holmes (sh) is investigating a wet (湿) puddle next to an empty water bottle (氵) in front of the space station (Ø1). Although it is very obvious what happened through the conspicuous (显) empty water bottle, Sherlock still has to think hard about it.