elevation：(某地方的)高度(尤指海拔

词根词缀：e-出 + -lev-举,升 + -ation

• ironic
• ironing
• ironmonger
• iron rations
• ironstone
• irony
• irradiance
• irradiate
• irrational
• irreconcilable
• irrecoverable
• irredeemable
• irreducible
• irrefutable
• irregular
• irregularity
• irrelevance
• irrelevant
• irreligious
• irremediable
• irreparable
• irreplaceable
• irrepressible
• irreproachable
• irresistible