「Showering with deliberately out-of-reach」indicates a very long shower during which FLUIDS MERGE, likely water with some bodily secretions as the showering person's meat THAWS and releases fluids.「Fluid」that「surrounds from above, deliberately out-of-reach」「contained contents」perhaps is the ice and snow from mountain tops that MELTS and THAWS into streams of runoff water, eventually becoming the force that shapes and forms the valleys below and between peaks. Can mean THAW or MELT as it applies to water, but also to hard items such as metal, rock, minerals or any other substance that can become a liquid, or「any solid substance that contains a liquid state.」Note that 3,000 years ago, the perspective was slightly different than modern physics and chemistry. The concept being depicted may be that「there is a liquid contained in this form」of some material, and that liquid is set free when the object thaws or melts with heat.
Nevertheless,「fluids are contained」while a FUSION OF FLUIDS occurs after a heated, on fire burning and flaming erection (火) in pursuit of a sitting person finds a place with v-shaped legs with emissions and may also THAW a frigid mindset.「Fluids also are contained」in an outhouse commode or other privy where folks communally excrete, the「toilet」where it all sort of FUSES into one slurry SCRAMBLED mass, and the hard pieces are softened, MELTED and DISSOLVED as it were (if reading the elements literally).
「Deliberate fluids flowing and copulation with orifice, orifice emissions」and「out of reach with persons inside following in a line, going along with others, moving in the same direction」with all the queued folks doing the same thing that eventually will create a large flow SCRAMBLING the ejaculate, OVERFLOWING like a waterfall oozing (while at rest) or splashing (while in service) out of the affected orifice(s). Military troops were each allotted about three minutes with a 'comfort woman' so you can imagine the sort of flow that would soon result over the course of a busy day…or maybe you can't, so figure about a quart/liter of scrambled「flow contained within the valley.」Then there is God Almighty's take on this matter, found in Deuteronomy 21:10 When you go to war…and you take captives, 11 if you notice among the captives a beautiful woman and are attracted to her, you may take her as your wife. 12 Bring her into your home…then you may go to her and be her husband and she shall be your wife. 14 If you are not pleased with her, let her go wherever she wishes. You must not sell her or treat her as a slave, since you have dishonored her.

External source definitions …excluding politically incorrect concepts and other meanings deemed offensive today; may include extended definitions, euphemisms, and mnemonics)
Chinese: to dissolve; soluble
Japanese EDRDG: melt, dissolve, thaw
Unihan extended: to melt, dissolve; overflowing with