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$user=""|select name,age,city
$user.name="å¼ ä¸"
$user.age=18
$user.city="å京"
$user
è¿å°±æ¯ä¸ä¸ªå¯¹è±¡ï¼ä¸ç»$userå°±æ¯ä¸ä¸ªå¯¹è±¡ç»ï¼
$users=@()
$users+=$user
$user=""|select name,age,city
$user.name="æå"
$user.age=17
$user.city="ä¸æµ·"
$users+=$user
$users
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