1.堵塞墙缝
1.to separate a small space from a larger one by building a wall or by permanently closing a door
1.Google's strategy, he adds, seems to be to "wall off content so that it cannot be crawled and searched by competing companies. "
他又说，谷歌的战略就是隔离其掌握的内容，这样其它的竞争对手就不能搜索到了。
2.How would Facebook wall off the accounts of young Chinese who study overseas, set up accounts, and return to China?
脸谱网如何隔离那些在海外学习的中国年轻人，他们注册后又回到中国？
3.Excluding China from America's financial system would wall off a big customer for its own debt.
美国的金融系统如果把中国排除在外也就意味着拒绝了它自己债务的一大买主。
4.How can you tear the back wall off a house you don't even own?
你怎么能把甚至还不属于你的房子的后墙拔掉呢？