我怎样才能实现这些自定义用户组和获得用户的网页带弹簧的安全？
How can I implement these custom user groups and the access to users pages with spring security?
水龙头出口处设置有带弹簧的止漏阀，过滤网设置在水龙头进口处。
The outlet of the water faucet is provided with a leakproof valve with a spring, the filter screen is arranged at the inlet of the water faucet.
那是一辆老式的带弹簧的四轮马车，上面的帆布圆顶子象是拓荒者用的大篷车的顶篷。
It was an old spring-wagon, with a round canvas top on it like the cover of a prairie schooner.
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