The old security model was for it to build a big mote around the corporate network and only let trusted, authorized employees come across the well-guarded drawbridge and into the proverbial castle.

IT旧的安全模型是在企业网络周围建立一刻巨大的微尘，只让受信任的、已授权的员工穿越守卫严密的吊桥墙进入众所周知的城堡。

youdao

With few other tourists for company, we charged around the ramparts, stampeded across the drawbridge and did battle on the, um, battlements - the setting was so filmic, it was hard to resist the urge.

几乎没有别的游人同行，我们冲破壁垒，穿越吊桥，在城墙上战斗——背景真像在电影里一样，我们拟制不住模仿一番的冲动。

youdao

The biggest danger is if America disengages, if it decides to pull up the drawbridge and say to the rest of the world, 'Well you go and sort it out.'

如果美国退出了，如果美国决定撒手不管，向全世界宣布，‘你们来处理吧！’这将是个最大的危险。

youdao

People want to pull up the drawbridge to imports, further reducing growth around the world.

FORBES: To Expand Commerce And Grow The Economy, Trade Freely With Europe

The children built a castle, of course, but castle-building is rather poor fun when you have no hope of the swishing tide ever coming in to fill up the moat and wash away the drawbridge, and, at the happy last, to wet everybody up to the waist at least.

NPR: Excerpt: 'Five Children and It'

Yet today many descendents of immigrants want to pull up the drawbridge.

FORBES: The GOP And Immigration: Good Economics, But What About The Politics?