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1.wreckage n. （失事船或飞机等的）残骸；（船只等的）失事
The wreckage slowly drifted away.
残骸慢慢漂走了。
2.state-of-the-art adj. 最先进的；已经发展的；达到最高水准的
The system was state of the art.
这一系统是当时最先进的。
3.concrete n.混凝土
The posts have to be set in concrete.
这些柱子必须固定在混凝土中。
4.reflection n. 反射；沉思；映象
Inhibition in adulthood seems to be a reflection of a person's experiences as a child.
成年期的压抑似乎是一个人童年经历的一种反映。
