During the development of these patterns, a number of key points were discovered.

在这些模式的开发过程中，发现了许多关键点。

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But we have discovered another keyhole and another key which can lock the door.

但是我们发现了另一个锁孔和另一把可以锁门的钥匙。

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But we have discovered another keyhole and another key which can lock the door.

但是我们发现了另一个锁孔和另一把可以锁门的钥匙。

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