user registration tool 用户注册的工具
registration tool
注册工具
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The U.S. Supreme Court held in a 2003 ruling that sex offender registration is a public safety tool not intended to punish offenders.
CNN: Report: Registry does more harm than good for teen sex offenders
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