英语语法分析

The deadbolt when fully thrown in the locking direction and detained, shall have a minimum projection to the forend.

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。

Have good locks (deadbolt) on all doors and Windows.

有好的锁(门栓)在所有门和窗。

I walked to the door, pushed in the lock, threw the deadbolt closed and peeked out the peephole.

我走到门后，推上门锁，插紧门栓，又眯着眼睛从窥孔向外看。