当门栓完全朝锁定方向抛出并被扣住时，门栓对法线的投影最小。
The deadbolt when fully thrown in the locking direction and detained, shall have a minimum projection to the forend.
许多人选择放弃，然而，确保成功的途径需要你锁定方向，坚持自己的目标。
Many people may choose to give up. However, the surest way to success is to keep your direction and stick to your goal.
对于iPad用户来说，iOS 4.3可以通过软件设置来控制硬件开关，以便在静音和方向锁定之间进行切换。
For iPad users, iOS 4.3 brings sanity back to the hardware switch, as a software setting which allows changing between mute and orientation lock.
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