1·The house looked as if it was about to fall down.
房子看起来好像就要倒塌似的。
—— 《牛津词典》
2·The house will fall down.
那屋子迟早要倒塌。
3·Jun: You sure it won't fall down?
小君:你确定这屋子不会倒塌?
4·If buildings fall down with people inside, these snake robots can help look for people.
如果楼房倒塌而里面还有人,蛇形机器人就能帮助寻找人。
5·An international team of building experts began a project to make sure the Leaning Tower does not fall down.
一个国际性的建筑专家队开始了修缮工程,以确保斜塔不会倒塌。
1·And the purpose of the public option is to make sure that the industry doesn't waste another 15 years - by giving Americans an alternative if private insurers fall down on the job.