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Unit 3 Protecting ourselves 1、 abrupt adj. 突然的，意外的；唐突的，鲁莽的 (sudden/unexpected) abruptly adv. ＝suddenly ◆The heavy snow caused an abrupt change in our plan. 大雪导致了我们计划的突然变化。 ◆I'm afraid your abrupt words offended him a lot. 恐怕你唐突的话冒犯了他。 ◆Abrupt climate changes endanger many animals. 气候的突变使许多动物处于危险之中。 The children's poor health was ______ from their physical appearance. A. complicated B. apparent C. abrupt D. commercial B 孩子们的体格明显表明健康状况不佳。 2、 bid n. 企图，努力；喊价，出价，投标 vt. & vi. 出价，投标 vt. 命令，吩咐；说(问候话); 致意 ◆The young salesman is working hard to make a bid for promotion to sales manager. 这位年轻销售员努力工作，争取被提拔为销售经理。 ◆We bid for the construction of a bridge. 我们投标造一座桥。 ◆Do as he bids. 照他的吩咐去做。 3、trap vt. 诱捕；使……受限制；使……陷入困境 vi. 设陷阱 n. 陷阱；圈套 ◆He used some cheese to trap the rat. 他用了些乳酪诱捕耗子。 ◆Trapped in the burning house, he could not escape. 他被困在起火的房子里无法逃脱。 ◆Thirty miners were trapped underground after the fire. | 
