It allows multiple keys, which raises the possibility of duplicate nodes in a group.
它允许多个键，提高了一个分组中重复节点的可能性。
A skilled locksmith can duplicate many types of keys just by looking at the original.
一名老练的锁匠只要看一眼原物就可以复制出许多类型的钥匙。
In one demonstration, the team cut duplicate keys after analysing images taken on a mobile phone.
在一次演示中，小组人员通过分析手机拍摄的照片对钥匙进行了复制。
Perhaps this was once a reasonable assumption, but advances in digital imaging and optics have made it easy to duplicate someone's keys from a distance without them even noticing.
或许这种假设在以前成立，但是数码拍照和光学技术在不断进步，从远处就可以轻而易举地复制你的钥匙，你甚至都不会察觉。
The keys of a dictionary are inherently unique, so it's possible to use a dictionary to remove duplicate lines from a file, and to do so in a way that preserves the original ordering of those lines.
字典的键天生是唯一的，所以可以用字典来删除文件的重复行，为了完成这项工作可以采用保存这些行的原始排序的方法。
The safest way to prohibit duplicate primary keys is to have your application (which will be managing a sharded system anyway) generate keys.
避免相同主键最安全的方法就是让应用程序(应用程序将管理切分系统)生成主键。
This table, sorted in alphabetical order, requires a lexical key comparison function, and USES support for duplicate keys in BDB.
本表，按字母顺序排序的，需要一个词汇重点比较功能，并使用在BD B重复键的支持。
When adding, an element is considered a duplicate only if the keys are identical but the values are different.
添加元素时，只有键相同而值不同的元素才被视为重复元素。
We lost our keys but fortunately there was a duplicate set.
我们的钥匙丢了，不过幸运的是还有一串配好的钥匙。
We lost our keys but fortunately there was a duplicate set.
我们的钥匙丢了，不过幸运的是还有一串配好的钥匙。
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