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1.The preliminary locking of the door is done before we open it.
在开门之前，我们首先进行门锁的初步锁定。
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2.Before the final decision, we need to conduct a preliminary locking of the project scope.
在最终决策之前，我们需要对项目范围进行初步锁定。
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3. During the initial stages of the project, we need to ensure that all preliminary locking procedures are followed.
在项目初期阶段，我们需要确保遵循所有初步锁定程序。