Rubbish such as glass, iron and plastic rots away over a long period of time.
像玻璃、铁和塑料这样的垃圾要好长时间才会烂掉。
Which was how she found herself talking to Nelson Mandela in his cell on Robben Island in 1967, or tramping through squatters' camps of plastic sheets and corrugated iron.
她通过在1967年在罗本岛纳尔逊·曼德拉的单人牢房里与他谈话，或通过徒步穿过棚户区居民的由波纹钢和塑料薄膜建成的营地，发现自己的这种议员的权力。
Drillable packers, and similar tools such as bridge plugs, are typically made from cast iron, aluminum, plastic or similar brittle materials.
可钻式封隔器以及桥塞等类似的工具一般都用铸铁、铝、塑料或类似的脆性材料制成。
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