M5 unit2 words1.economy n. 经济，节约domestic/national economyeconomic adj. 经济上的，经济学的economic activity/growth/theoryeconomical adj. 经济的，节约的an economical car 耗油少的车 an economical woman 节俭的妇女economics n. 经济学 economist n. 经济学家2.debate v./n. 辩论，争辩，争论v. We debated for an hour on his plan.They were debating whether to go to the mountains.debate sth with sbWe must debate the question with the rest of the members.n. open/ close a debate 开始/终止辩论under debate 在讨论中 beyond debate 无可辩论，无疑义3.preservation n. 保护，保存 the preservation of food/ one’ healthpreserve v. 保护，维持preserve one’s strength/eyesight 维护体力/视力The city should take steps to preserve the old temple.preserve……from…… 保护……免于……4. in addition 另外，加之，作副词用，相当于 besides 或 as well There was an earthquake and, in addition, there was a flood. His mother gave him some cakes for his picnic and some bottles of water in addition. in addition to …… 作介词用，意为“加之，除了…之外 He speaks French in addition to English. 5.wipe out 扫除，消灭，擦洗…的内部，雪耻In the battle, the enemies were completely wiped out by the PLA.I hope that the terrible scene will be wiped out from the little boy’s memory.Will you please wipe off the drawing from the blackboard? 擦掉Please wipe up that spilt coffee. （把溅出的水等）抹掉She wiped her tears away with her handkerchief. 擦去（眼泪等）6.lay——laid, laid——laying 产卵，下蛋，放置，摆放 The hen lays eggs every day. 下蛋专心 爱心 用心1Please lay the table for dinner. 摆设餐具The couple laid aside some money for their old age. 储蓄The president laid great emphasis on would peace. 放重点在……上Don’t lay all the blame for the accident on me. 归罪于Some workers were ...
