词根词缀：hydro-, hydra-, hydr-, hyd-
【来源及含义】Greek: water
【相关词根词缀】 Cross references of word families that refer to "water": aqua-; hydat-; hygro-.
【同源单词】ahydrotaxis, anhydrase, anhydration, anhydride, anhydrobiosis, anhydrous
词根词缀：pono-, pon-, -ponic, -ponics
【来源及含义】Greek: toil, labor, work hard, fatigue; exertion; also, suffering, pain
【相关词根词缀】
Cross references related to "work, toil" word families:
argo-;
ergasio-;
ergo-;
labor-;
oper-;
urg-.
Cross references related to "pain, hurt; suffering, injury" word families:
-agra;
algesi-;
algo-;
angina-;
dolor-;
Masochism;
noci-;
odyno-;
poen-;
Sadism.
【同源单词】aeroponics, aphilopony, aponia, aponic, aquaponics, dysponesis