ionosphere

n.电离层

involution, involve, involved, involvement, involvement in, invulnerability, invulnerable, inward, inward (also inwards), inward(s), inwardly, inwardness, inwards, iodine, iodize, iodise, IOM, ion, Ionic, ionization, ionisation, ionize, ionise, iota, IOU, IOW, Iowa, IPA, ipso facto, IQ, ir-, IRA, Iran, Iraq, irascibility, irascible, irascibly, irate, irately, IRBM, ire, Ireland, iridescence,