Half an hour later Martini entered the room,and,startled out of the silence of half a life-time,threw down the placard he was carrying and flung his arms about her.请问下这个句子中的 out of

Half an hour later Martini entered the room,and,startled out of the silence of half a life-time,threw down the placard he was carrying and flung his arms about her.
请问下这个句子中的 out of

这句话的意思是：半个小时以后,马尔蒂尼走进了屋里.沉默寡言了半辈子,他这时却惊醒了过来.他扔掉手中的布告,一把将她抱住
这里的out of 相当于from.startle from/ out of..从.中惊醒.

由于

半个小时以后，Martini进了房间.