n.遗传素质,本能冲动,身份证,标识符
You must carry ID at all times.
你必须随身携带身份证件。
Peter took out his wallet and showed his ID to the man.
彼得掏出钱包向那人出示他的身份证件。
Registrars checked the ID cards of prospective voters.
登记员核对未来投票人的身份证。