1.stretch from 延伸
例句:Most stretch yarns can be extended from one and one-half to twice their normal or relaxed length.
大多数弹力丝可被拉伸到正常或松驰状态长度的1倍半到2倍 。
2.from to 从...到
例句:He was fired from his job after roughing up a colleague.
他因为对一位同事动粗而被开除了 。
3.struggle to 斗争
例句:At all events, we will carry the struggle to the end.
无论如何,我们要将斗争进行到底 。
4.be made of 用…造成
例句:The pipes should be made of plastic .
这些管子应该是用塑料制作的 。