1.scrap material 废料，废物
例句：Mostly out of scrap material as are most of my projects.
这个设计的原材料绝大多数都是废弃物vyvDm=vKDXi||mazzEm。
2.come to a halt 停止前进，停下来，停住
例句：Whenever something is moving, it will come to a halt.
无论什么时候在移动，物体最终都会停下来Wm#(C=8!x8^.。
3.be designed to 目的是，被设计用于
例句：Each file system dictates its own storage strategy, which may be designed to meet a specific criterion.
每个文件系统规定自己的存储战略，可能是为满足特定的条件而设计的SurB~.P.1FfV*!ax。
4.be supposed to 应该，被期望
例句：People are supposed to be who they say they are. And not lie or hide their true selves.

人们应该都是他们自称的那个人，不应该撒谎或者隐藏他们真实的自我WXZ2nFP1(7b=]Q.O&_。