id:虚拟系统的id。
To reference an item dynamically, give it a unique id via the id attribute.
为动态引用一个项目,通过id属性给予其一个惟一的id。
Id: the id name you'll use to reference this class instance in the XML document.
id:用于在XML文档中引用这个类实例的id名。
Sa'id Nassar,a Cairo-based writer and commentator on Arab political affairs, (SAYING) he argued that these leaders came to prominence "on top of American tanks."
VOA: standard.2010.04.04
It's like you have a social security number or other ID number, which positively--there might be another person with the same name as you, God forbid, but you at least have your own number, which is guaranteed to be unique to you.
就好比社保号,或者其他身份号码,很有可能,有另外一个人,和你重名,希望这不要发生,但你至少有唯一的识别号,用于区分自己和他人
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