Mochine oa metsi oa metsi oa oli oa bohloeki oa metsi ke sistimi ea kalafo ea metsi e etselitsoeng ho tlosa linoko le tšitiso ea metsi. Eitse ha metsi a kopana le maemo a bohloeki a hlokahala bakeng sa lits'ebetso tse fapaneng tse kang ho cheka ho phatloha ho hong le ho chechisa le mekhoa ea tlhahiso. Tse latelang ke tse ling tsa likarolo tsa sehlooho le mekhatlo e tloaelehileng e fumanehang ka har'a mechini ea metsi a hloekileng a purity ea oli ea hlooho ea oli ea hlooho ea oli ea limela. Hangata e na le sefahleho, joalo ka filthara ea lehlabathe kapa filthara ea multimea, eo litšila joaloka metsi li feta ka eona. Hangata tsamaiso ea osmosisis (ro) e fetotsoeng: Metsi a qobelloa ho 'molamu o sa sebetseng hantle tlas'a khatello e phahameng, a siea litšila. Tsamaiso ea likhetho tsa lik'hemik'hale: Maemong a mang, litsamaiso tsa li-lik'hemik'hale tsa lik'hemik'hale li ka sebelisoa ho eketsa lik'hemik'hale tse thusang ho lieha, ho phatloha kapa ho tšoaroa. Sena se thusa ho tlosa kapa ho khelosa litloholo tse itseng. Sistimi ea Dispon: Ho netefatsa hore metsi a bolokehile ebile a se na likokoana-hloko tse mpe, sistimi e sa tšoaroang joalo ka ultraviolet (UV) Mohato o bolaea kapa o ntse o sebetsa libaktheria leha e le sefe, livaerase, kapa likokoana-hloko tse ling tse teng. Tsamaiso ea ho beha leihlo le ho laola maemo: Litsamaiso tse felletseng tsa ho beha leihlo le ho laola maemo a ikhethileng ho bohlokoa ho tiisa boleng ba metsi, phallo, khatello le litekanyetso tse ling. Sena se lumella sesebelisoa ho netefatsa hore sistimi e sebetsa ka tieo le ho etsa liphetoho tse hlokahalang. Moralo o kentsoeng skid-se sebelisitseng masimong a merusu e phahameng hangata e etselitsoeng ho besa libaka tsa masimong a fapaneng. Re lokela ho hlokomela hore ho tsepamisa mohopolo o khethehileng le sebopeho sa mechini ea metsi a meriana e phahameng ea masimo a oli e ka fapana ho latela litlhoko tsa lebala la oli le boemo bo hloekileng ba metsi. Ho khothalletsoa ho sebetsa le Liphatlalatso tsa Tlhaho ea Yantai Riotong Metsotso ea Metsi ea Seteishene sa oli ea metsi ho etsa moralo o nepahetseng ho latela litlhoko tsa hau tse khethehileng.