erosion

n.侵蚀，腐蚀

eradicate, eradication, eradicator, erasability, erase, eraser, erasure, ere, erect, erectile, erection, erectness, erector, erg, ergo, ergonomics, ermine, erode, eroded, erogenous, erosive, erotic, erotica, erotically, eroticism, err, errand, errant, erratic, erratically, erratum, erroneous, erroneously, error, ersatz, erudite, eruditely, erudition, erupt, eruption,