In Chinese, perhaps referring to the long-time designation of land as for agricultural use,「lifetime in the fields」to depict AGRARIAN USE. In Japanese, revealing a slight disdain of and bigotry against the farmer 'class' of human being (all undeserved and unwarranted, mind you): elements as「rice paddy jerk-offs」to mean CLASSIFICATION of both humans and land. Perhaps depicting examples of two varieties of sexual release as KINDS or CLASSIFICATIONS,「plugging an orifice」or「two-handed masturbation.」Referring to what might occur prior to or during human coital activities: elements as「plugged orifice jerk offs」or「lifelong activity of plugging orifices」meaning BEFORE, COMPANION, and SAME KIND perhaps「continuing as before with the same kind of companion for one's entire life」and not switching (too often or too obviously) to plugging some sort of other quirky or kinky orifice or companion.
　Without a doubt, the Irish also have knowledge of their own to pass along in these trying times:「Masturbation will not spread coronavirus, especially if you wash your hands (and any sex toys) with soap and water for at least 20 seconds before and after.」Nonetheless and regrettably, unlike in dynastic China, it must be undertaken alone to truly be a preventative countermeasure but still achieve the desired result with some degree of safety.
　 　[　https://www.sexualwellbeing.ie/sexual-health/sex-and-coronavirus/ 2020-03-31　]　
　The Dutch, too have the same solution—it seems masturbation has become mainstream in the media the world over due to the coronavirus (it has always been 'the main stream' in reality, albeit covertly for most folks):
　「'Don't have sex with your partner if they have been isolated because of (suspected) coronavirus infection,' the RVIM says. 'Sex with yourself or with others at a distance is possible (think of telling erotic stories, masturbating together).'」
　　[　https://www.theguardian.com/world/2020/may/15/dutch-official-advice-to-single-people-find-a-sex-buddy-for-lockdown-coronavirus 2020-05-16　]　
　Needless to point out perhaps, but Chinese shamans from antiquity hit upon the same solution as a pandemic preventative countermeasure, honed for ultimate client satisfaction by utilizing naked females with no-longer-integrated feet as masturbatory sex buddies available for short-term rental with erotic visualization of live prepubescent female genitalia engaging in autoerotic stimulation herself, as a solution to the same problem facing us now, but in pre-Internet days.

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Chinese: arable fields; cultivated field; class; category
Unihan extended: farmland, arable land; category
EDRDG: before; companion; same kind