We often bring ID cards2,work cards,or driver licenses with us to prove our identity.If all these cards are forgotten or lost,how can we prove we are? In fact,its not difficult to prove whom you are,because your body has identifying markers.Some are physiological features,such as fingerprints,sounds,facial types and eye color.The computer can help t0 identify you.Suppose your features have already been stored in the database3.To identify you,we have to take your picture with a camera and send it to a computer for .First,the computer needs to reposition this picture according to the position of your eye4,and then starts to read the message of your physiological features such as the 0f your pupil5 to the whites of your eyes6 and the shape of his nose.Next,it seeks matching records from the database.Finally,it makes a .
词汇:
hipbone n.股骨pitch n.音高
limb n.肢体license n.执照
database n.数据库
fingerprint n.指纹
spectrum n.频谱
reposition v.改变位置
digit n.数码,数字
注释:
1.on which the computers can distinguish:在这个基础上,电脑能区分。前面带有介词的关系代词which引导定语从句,修饰basis。
2.ID cards:身份证。ID=identity
3.Suppose your features have already been stored in the database:假定你的特征已经储存在资料库里。Suppose your features have already been stored in the database可以理解为Let us suppose your features have already been stored in the database。
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