existing

动词 exist:

1. have an existence, be extant
   同义词：exist, be
2. support oneself
   同义词：exist, survive, live, subsist

形容词 existing:

1. having existence or being or actuality
   同义词：existent
2. existing in something specified
3. presently existing

1. To join the club you have to be put up by an existing member.
   要加入俱乐部必须有一位会员做介绍人。
2. In her speech, the Minister came out against any change to the existing law.
   这位部长在她的讲话中表示不同意对现行法律作任何更改。
3. Our future plans must mesh with existing practices.
   我们未来的计画必须与当前的实践相合。
4. All the cases can be considered within the framework of the existing rules.
   一切情况都可依据现行章程的结构加以考虑。
5. I strongly incline to the view that we must make full use of the existing technical equipment.
   我赞成这样一种意见，即我们必须充分利用现有的技术设备。
6. The electronic office will mean a revision of existing office procedures and job role.
   电子化高科技办公室意谓著现有的办公方式和角色的变更。
7. In computer security, any weakness or flaw existing in a system, the susceptibility of a system to a specific threat attack or harmful event, or the opportunity available to a threat agent to mount that attack.
   在计算机安全学中，存在于一个系统内的弱点或缺陷，系统对一个特定的威胁攻击或危险事件的敏感性，或进行攻击的威胁作用的可能性。
8. We should make a better use of the existing equipment.
   我们应该更好地利用现有设备。