erratic

a.古怪的，反复无常的，不稳定的

erectile, erection, erectness, erector, erg, ergo, ergonomics, ermine, erode, eroded, erogenous, erosion, erosive, erotic, erotica, erotically, eroticism, err, errand, errant, erratically, erratum, erroneous, erroneously, error, ersatz, erudite, eruditely, erudition, erupt, eruption, Erving Goffman, erysipelas, ESA, escalate, escalation, escalator, escalope, Escalopia, escapade,