Next, I'll add a tiny bit of behavior to my User domain class.
接下来，我要添加一点点的行为给我的user域类。
The most successful domain-shortening service, bit. ly, got 1.5 billion clicks last week.
在上周，最成功的域名缩短业务bit. ly获得了15亿次的点击。
The most successful domain-shortening service, bit. ly, got 1.5 billion clicks last week.
在上周，最成功的域名缩短业务bit. ly获得了15亿次的点击。
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